CREG Journal (ISSN 1361-4800)

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This facility searches the Contents Lists for the CREG journal. There are some 1500 records in the database, going back to the first issue in 1988. Each record usually represents a single article, but there are also brief 'headline' records that refer to a complete journal and, occasionally, there are records that refer to the CREG Forum , rather than the CREG journal. Click here for further info. 

Headline Records: The bibliographic listings each contain a single 'headline' record that refers to an entire journal. As these are records in the database, they will display during a search if you use a vague-enough search expression, like CREG Journal.

These Headline Records can be useful if you want to see a listing of all the journals. To do that, select - in the options below - Search Titles | Do not search Abstracts | Regular Expression Search | Do not show Abstracts. Then use a search expression of ^CREG (J|N) which, in the arcane notation of a regular expression, means "look for records that begin with CREG J or CREG N". Or click here to reload this page and run the search with those options all set.

CREG Forum: The database contains some records that link to postings on the CREG Forum . The most significant of these contain the text cregf in the Title record, so a simple search for that term in the Titles will list the relevant records. If you search for that term in the Abstracts it will match additional occurances of the CREG Forum URL, but these will be corrupted unless you select Do not tag matched text, like this.

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Type a search string and hit return, or click the SEARCH button For HELP scroll down to Help with Searching Advanced Settings. These override the default search settings, but are ignored (and are cleared) for a Regular Expression search. Scroll down to Help with Searching for further information. Single space does not match multiple spaces Hyphen does not match en-dash Do not search inside HTML tags Do not search inside Character Entities Allow ( and ) inside Boolean search strings. Note. If you select this option you must ensure, if you also use ( and ) to group your search expressions, that these 'group separators' are separated from the search strings and the other operators using spaces

What to search...  Titles,  Abstracts (including Authors) Authors: To start a search based on an author, type their name in the search box, or see List of Authors  (That list will be available in the near future) What to match...  Case,  Whole words only, Years:    Year of Publication: Two-digit and four-digit years are understood. You can specify a single year (e.g. 2007), a range of years (e.g. 99–03), or an open-ended range (e.g. 2015– or –99). If the box is blank or contains something that cannot be 'understood' the default is to search all years. To see the listings for a single journal see CREG Journal  How to search... Plain Text,  Use Wildcards Wildcard searches: ? matches a single character or a Character Entity (that is, an accented chracter or a symbol); * matches a string of any characters, but is prioritised to be as short as possible ,  Boolean Boolean  Expressions: Not yet implemented, but you may be able to achieve a similar result with an appropriate Regular Expression. A Boolean search allows you to combine Wildcard search strings with the logical operators NOT, AND, OR, XOR and IMP (IMPLIES), and to group them with parentheses, ( and ). In this implementation, the search string and the operators must each be separated by one or more spaces but you can still use spaces inside your search strings. However, you cannot use ( or ) in your search strings (but see Help with Searching below). Unlike some Boolean searches, this one does not execute with a simple left-to-right evaluation. Instead, the operators have a presidence ranking which, in high-to-low order, is NOT, AND & IMP, OR & XOR. ,  Regular Expression Regular Expressions: These are an extremely powerful way of specifying complicated searches, but they are only suitable for experts. In particular, you may need to know something about the database structure in order to use a regular expression regular to best advantage. See Help with Searching below. How to display the results...  Do not show Abstracts,  Negate the search result Negate the Search Result shows the records in which your search term did not appear. If you elect to search both Titles and Abstracts it shows the records in which your search term did not appear in the Title and did not appear in the Abstract. ,  Do not highlight matched text Do not highlight matched text may be useful of your search partially matches an HTML tag or a Character Entity, for which highlighting the match (i.e. adding additional HTML to cause it to be highlighted on the screen) may result in the record not displaying properly; not being highlighted at all; or a URL in the record being corrupted. ,  Show DOIs Show Digital Object Identifiers (DOI) will cause each record to display a (non-clickable) URL in green, which is the DOI for that record. DOIs are a method of refering to an online resource such as a document. We are still experimenting with and developing this fearure. See doi.bcra.org.uk  for further info. Help with accented characters and symbols If you need to search for an accented character or a symbol (e.g. é Ñ µ) you need to know that they are represented in the database by a string of characters, known as a Character Entity. You should use a Wildcard Search, where the special character ? will match any single character or a Character Entity. For example, to search for the author Muñoz you should search for Mu?oz. Note: at the moment, the database contains some unconverted accented characters so sometimes a plain-text search will find them, but this is not reliable, so you should use a wildcard search. (As an example, compare a search for é (e-acute; CTRL-ALT-E) with a search for the Character Entity é)

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[1] CREG Journal 124, CREGJ 125, pp0-20. March 2024. (PDF 7.0MB)      [39]

[2] Front Cover, CREGJ 125, p1. March 2024. (PDF 2.4MB)     [4]

[3] Contents, CREGJ 125, p2. March 2024. (PDF 361KB)     [5]

[4] News and Notes, CREGJ 125, p2. March 2024. (PDF 361KB)     [5]

[5] Starting out in Underwater Cave Photography, CREGJ 125, pp3-5. March 2024. (PDF 2.2MB)     [2]

[6] We Hear, CREGJ 125, p6. March 2024. (PDF 318KB)     [1]

[7] Using Low-Cost Software to Obtain and Study Stalagmite Greyscale Data, CREGJ 125, pp7-10. March 2024. (PDF 831KB)     [3]

[8] A Loop Antenna for the Micro HeyPhone, CREGJ 125, pp11-12. March 2024. (PDF 578KB)     [2]

[9] Cellular Networks for IoT, CREGJ 125, pp13-16. March 2024. (PDF 553KB)     [5]

[10] Letters to the Editor, CREGJ 125, p16. March 2024. (PDF 315KB)     [1]

[11] Introducing the SWAR-2EX and SpellCom Wireless Rescue Communication Systems, CREGJ 125, pp17-20. March 2024. (PDF 1.1MB)     [2]

[12] CREG Journal 124, CREGJ 124, pp0-24. December 2023. (PDF 3.7MB)      [65]

[13] Front Cover, CREGJ 124, p1. December 2023. (PDF 1.4MB)     [4]

[14] Contents, CREGJ 124, p2. December 2023. (PDF 263KB)     [19]

[15] News and Notes, CREGJ 124, p2. December 2023. (PDF 263KB)     [19]

[16] Digital Cave Communications – Smaller, Lighter, Cheaper!, CREGJ 124, pp3-5. December 2023. (PDF 739KB)     [11]

[17] ARCANA 2023 – Radiolocation Beacon and Receiver with Two-way Text Communication, CREGJ 124, pp6-8. December 2023. (PDF 553KB)     [7]

[18] A Semi-empirical Approach to Microwave Propagation Modelling in Caves, CREGJ 124, pp9-15. December 2023. (PDF 696KB)     [3]

[19] We Hear, CREGJ 124, p16. December 2023. (PDF 287KB)     [3]

[20] Reciprocity and Radiation, CREGJ 124, pp17-20. December 2023. (PDF 348KB)     [2]

[21] Building Blocks, CREGJ 124, p21. December 2023. (PDF 282KB)     [2]

[22] Earth Electrodes for Cave Radios – a Practical Guide for Deployment, CREGJ 124, pp22-23. December 2023. (PDF 325KB)     [5]

[23] Long-Range Cave Radio, CREGJ 124, p24. December 2023. (PDF 291KB)     [5]

[24] CREG Journal 123, CREGJ 123, pp0-24. September 2023. (PDF 7.1MB)      [75]

[25] Front Cover, CREGJ 123, p1. September 2023. (PDF 2.3MB)     [2]

[26] Contents, CREGJ 123, p2. September 2023. (PDF 338KB)     [14]

[27] Ice Cave Photography using a Smartphone - a Hands-on Guide, CREGJ 123, pp3-6. September 2023. (PDF 2.1MB)     [6]

[28] The Ongoing Saga of the LORAN-C and eLORAN Terrestrial Navigation Systems, CREGJ 123, pp7-8. September 2023. (PDF 313KB)     [4]

[29] Letters to the Editor, CREGJ 123, p8. September 2023. (PDF 206KB)     [2]

[30] Building Blocks, CREGJ 123, p9. September 2023. (PDF 292KB)     [4]

[31] NSS Communications and Electronics Section Meeting 2023, CREGJ 123, pp10-11. September 2023. (PDF 400KB)     [2]

[32] Reciprocity in Cave Radio Antennas, CREGJ 123, pp12-14. September 2023. (PDF 359KB)     [2]

[33] We Hear, CREGJ 123, p15. September 2023. (PDF 302KB)     [2]

[34] Cave River Level Telemetry at Dan-yr-Ogof, CREGJ 123, pp16-20. September 2023. (PDF 963KB)     [7]

[35] Field Equations in Conducting Media, CREGJ 123, p20. September 2023. (PDF 263KB)     [3]

[36] The Cave Surveying Group's Spring 2023 Meet-up, CREGJ 123, p21. September 2023. (PDF 360KB)     [8]

[37] Turning 3D Models into Cave Maps, CREGJ 123, pp22-24. September 2023. (PDF 576KB)     [8]

[38] CREG Journal 122, CREGJ 122, pp0-24. June 2023. (PDF 4.4MB)      [67]

[39] Front Cover, CREGJ 122, p1. June 2023. (PDF 603KB)     [4]

[40] Contents, CREGJ 122, p2. June 2023. (PDF 394KB)     [25]

[41] News and Notes, CREGJ 122, p2. June 2023. (PDF 394KB)     [25]

[42] A Practical Guide to Underground Film Making Using a Drone, CREGJ 122, pp3-4. June 2023. (PDF 530KB)     [8]

[43] Comparative Review of MF and HF Frequencies for Cave Radio, CREGJ 122, pp5-8. June 2023. (PDF 637KB)     [8]

[44] Letters to the Editor, CREGJ 122, p9. June 2023. (PDF 505KB)     [1]

[45] An Improved Directional Draught Detector, CREGJ 122, pp10-12. June 2023. (PDF 707KB)     [11]

[46] Building Blocks, CREGJ 122, p13. June 2023. (PDF 331KB)     [3]

[47] Comparing Loop and Line Antennas for Cave Radio Applications – 1, CREGJ 122, pp14-16. June 2023. (PDF 381KB)     [30]

[48] We Hear, CREGJ 122, p17. June 2023. (PDF 357KB)     [3]

[49] An Affordable Water Sampler, CREGJ 122, pp18-21. June 2023. (PDF 813KB)     [5]

[50] The Resurgence of the QR Code and its Applications in Caving, CREGJ 122, pp22-24. June 2023. (PDF 399KB)     [4]

[51] CREG Journal 121, CREGJ 121, pp0-16. March 2023. (PDF 2.6MB)      [84]

[52] Front Cover, CREGJ 121, p1. March 2023. (PDF 551KB)     [3]

[53] Contents, CREGJ 121, p2. March 2023. (PDF 511KB)     [47]

[54] News and Notes, CREGJ 121, p2. March 2023. (PDF 511KB)     [47]

[55] Cave Radios for Communication and Radio-location - an Overview, CREGJ 121, pp3-7. March 2023. (PDF 565KB)     [28]

[56] Viewing Phosphorescence in Real-time, CREGJ 121, pp8-9. March 2023. (PDF 358KB)     [9]

[57] We Hear, CREGJ 121, p10. March 2023. (PDF 470KB)     [4]

[58] Current Problems in Cave Radio, CREGJ 121, p11. March 2023. (PDF 221KB)     [28]

[59] Wet & Dry, CREGJ 121, p12. March 2023. (PDF 371KB)     [3]

[60] Building Blocks, CREGJ 121, pp13-14. March 2023. (PDF 364KB)     [4]

[61] Amos Dolbear, Thomas Edison and Electrostatic Induction, CREGJ 121, pp15-16. March 2023. (PDF 305KB)     [4]

[62] CREG Journal 120, CREGJ 120, pp0-20. December 2022. (PDF 2.9MB)      [88]

[63] Front Cover, CREGJ 120, p1. December 2022. (PDF 358KB)     [10]

[64] Contents, CREGJ 120, p2. December 2022. (PDF 325KB)     [76]

[65] News and Notes, CREGJ 120, p2. December 2022. (PDF 325KB)     [76]

[66] A Semi-duplex Dual-wire Telephone for Expedition or Cave Rescue Use, CREGJ 120, pp3-5. December 2022. (PDF 696KB)     [4]

[67] A Miniaturised Radiolocation Beacon with a Ferrite Core, CREGJ 120, pp6-8. December 2022. (PDF 559KB)     [11]

[68] We Hear, CREGJ 120, p9. December 2022. (PDF 357KB)     [9]

[69] Geophysical Survey Techniques, CREGJ 120, pp10-12. December 2022. (PDF 562KB)     [11]

[70] Investigating Licence-free 433MHz and 2.4GHz Modules for use in Caving Projects, CREGJ 120, pp13-15. December 2022. (PDF 446KB)     [4]

[71] HF Radio Experiments at Fort Stanton Cave, New Mexico, USA, CREGJ 120, pp16-19. December 2022. (PDF 702KB)     [3]

[72] Letters to the Editor, CREGJ 120, p19. December 2022. (PDF 203KB)     [1]

[73] Digital Object Identifiers - Part 1, CREGJ 120, p20. December 2022. (PDF 251KB)     [6]

[74] CREG Journal 119, CREGJ 119, pp0-20. September 2022. (PDF 5.0MB)      [98]

[75] Front Cover, CREGJ 119, p1. September 2022. (PDF 1.8MB)     [3]

[76] Contents, CREGJ 119, p2. September 2022. (PDF 362KB)     [36]

[77] News and Notes, CREGJ 119, p2. September 2022. (PDF 362KB)     [36]

[78] Stereo Micro-Photography Using Focus Stacking, CREGJ 119, pp3-7. September 2022. (PDF 1.2MB)     [7]

[79] We Hear, CREGJ 119, p8. September 2022. (PDF 424KB)     [3]

[80] First Impressions of a Home-made 3D Laser Scanner, CREGJ 119, pp9-11. September 2022. (PDF 1015KB)     [14]

[81] The Mobile Ultraphone and Capacitive Coupler Options, CREGJ 119, pp12-14. September 2022. (PDF 580KB)     [5]

[82] Building Blocks, CREGJ 119, pp15-16. September 2022. (PDF 361KB)     [2]

[83] Power Line Interference in Baseband and VLF Cave Communication, CREGJ 119, pp17-19. September 2022. (PDF 409KB)     [3]

[84] Position Encoder Uses Single-Track Gray Code: Update, CREGJ 119, p19. September 2022. (PDF 227KB)     [28]

[85] Poster-Sized Stereo Photos: Update, CREGJ 119, p20. September 2022. (PDF 343KB)     [17]

[86] CREG Journal 118, CREGJ 118, pp0-24. June 2022. (PDF 6.2MB)      [83]

[87] Front Cover, CREGJ 118, p1. June 2022. (PDF 1.8MB)     [11]

[88] Contents, CREGJ 118, p2. June 2022. (PDF 371KB)     [28]

[89] News and Notes, CREGJ 118, p2. June 2022. (PDF 371KB)     [28]

[90] The Pease Ultraphone - an SWT for Extreme Conditions, CREGJ 118, pp3-7. June 2022. (PDF 1.4MB)     [14]

[91] We Hear, CREGJ 118, p8. June 2022. (PDF 409KB)     [8]

[92] Spotlight on Luminescence: why Things Glow in the Dark, CREGJ 118, pp9-11. June 2022. (PDF 482KB)     [7]

[93] Letter to the Editor, CREGJ 118, p12. June 2022. (PDF 272KB)     [3]

[94] Photographing Phosphorescence, CREGJ 118, pp13-15. June 2022. (PDF 515KB)     [4]

[95] The Circle of Least Confusion, CREGJ 118, pp16-17. June 2022. (PDF 290KB)     [21]

[96] The Circle of Least Confusion: Appendix, CREGJ 118, ppA1-A2. June 2022. (PDF 250KB)     

[97] Building Blocks, CREGJ 118, p18. June 2022. (PDF 246KB)     [3]

[98] Position Encoder Uses Single-Track Gray Code: Part 2, CREGJ 118, pp19-22. June 2022. (PDF 382KB)     [28]

[99] Cyclic Single-Track Gray Codes – Demo for CREGJ 118, CREGJ 118 (see supporting webpage). June 2022. (PDF 6.2MB)      [83]

[100] The Return of the CREG Field Meeting, CREGJ 118, pp23-24. June 2022. (PDF 1.6MB)     [3]

[101] CREG Journal 117, CREGJ 117, pp0-24. March 2022. (PDF 8.5MB)      [106]

[102] Front Cover, CREGJ 117, p1. March 2022. (PDF 8.5MB)      [106]

[103] Contents, CREGJ 117, p2. March 2022. (PDF 528KB)     [92]

[104] News and Notes, CREGJ 117, p2. March 2022. (PDF 528KB)     [92]

[105] Robocrane: Supporting Lunar Lava Tube Robotic Explorers, CREGJ 117, pp3-5. March 2022. (PDF 1.0MB)     [4]

[106] We Hear, CREGJ 117, p6. March 2022. (PDF 384KB)     [5]

[107] Photographic Enhancement of Cave Paintings using DStretch, CREGJ 117, pp7-10. March 2022. (PDF 2.1MB)     [3]

[108] Building Blocks, CREGJ 117, p11. March 2022. (PDF 236KB)     [4]

[109] BuecherNet at Fort Stanton Cave, New Mexico, CREGJ 117, pp12-15. March 2022. (PDF 2.1MB)     [6]

[110] Applications of Chain Codes for Position Encoders, CREGJ 117, pp16-18. March 2022. (PDF 397KB)     [32]

[111] Cyclic Binaries / Chain codes – Demo for CREGJ 117, CREGJ 117 (see supporting webpage). March 2022. (PDF 8.5MB)      [106]

[112] Modifying the DH18DSL Hammer Drill for Ease-of-use in the Cave Environment, CREGJ 117, pp19-21. March 2022. (PDF 873KB)     [12]

[113] Letter to the Editor, CREGJ 117, p21. March 2022. (PDF 319KB)     [26]

[114] Viewing Poster-Sized Stereo Pairs, CREGJ 117, pp22-24,1. March 2022. (PDF 2.2MB)     [29]

[115] CREG Journal 116, CREGJ 116, pp0-24. December 2021. (PDF 4.8MB)      [96]

[116] Front Cover, CREGJ 116, p1. December 2021. (PDF 2.0MB)     [3]

[117] Contents, CREGJ 116, p2. December 2021. (PDF 270KB)     [49]

[118] News and Notes, CREGJ 116, p2. December 2021. (PDF 270KB)     [49]

[119] Stereo Photography from the Basics to the Experimental, CREGJ 116, pp3-6. December 2021. (PDF 668KB)     [5]

[120] LEDs for Lighting and Photography: Efficiency and Colour, CREGJ 116, pp7-10. December 2021. (PDF 667KB)     [4]

[121] We Hear, CREGJ 116, p11. December 2021. (PDF 469KB)     [5]

[122] Letters to the Editor, CREGJ 116, p12. December 2021. (PDF 279KB)     [5]

[123] Web Watch, CREGJ 116, p12. December 2021. (PDF 279KB)     [5]

[124] Applications of Cave Communications – an Overview, CREGJ 116, pp13-14. December 2021. (PDF 322KB)     [14]

[125] Building Blocks, CREGJ 116, p15. December 2021. (PDF 731KB)     [6]

[126] A Base Station for the Lovell Earth Return Telephone, CREGJ 116, p17. December 2021. (PDF 378KB)     [6]

[127] Underground Communication - The Early Days, CREGJ 116, p18. December 2021. (PDF 349KB)     [11]

[128] Class-D SSB Modulator - Demonstrator Code Listing, CREGJ 116, pp20-21. December 2021. (PDF 275KB)     [43]

[129] Position Encoder Uses Single-Track Gray Code: Part 1, CREGJ 116, pp22-24. December 2021. (PDF 371KB)     [42]

[130] CREG Journal 115, CREGJ 115, pp0-24. September 2021. (PDF 4.8MB)      [96]

[131] Front Cover, CREGJ 115, p1. September 2021. (PDF 1.6MB)     [17]

[132] Contents, CREGJ 115, p2. September 2021. (PDF 351KB)     [43]

[133] News and Notes, CREGJ 115, p2. September 2021. (PDF 351KB)     [43]

[134] Experimenting with 3D Lidar Modelling on Latest iPhones, CREGJ 115, pp3-5. September 2021. (PDF 408KB)     [38]

[135] Overview of Methods for Modelling Radio Propagation along Cave Passages, CREGJ 115, pp6-8. September 2021. (PDF 455KB)     [14]

[136] Building Blocks, CREGJ 115, p9. September 2021. (PDF 312KB)     [1]

[137] A Simple Class-D Single-Sideband Modulator, CREGJ 115, pp10-13. September 2021. (PDF 657KB)     [56]

[138] We Hear, CREGJ 115, p14. September 2021. (PDF 390KB)     [8]

[139] Letters to the Editor, CREGJ 115, p15. September 2021. (PDF 313KB)     [5]

[140] Web Watch, CREGJ 115, p15. September 2021. (PDF 313KB)     [5]

[141] Data Protocol and Coding Examples for the British Cave Science Centre, CREGJ 115, pp16-20. September 2021. (PDF 452KB)     [44]

[142] Presenting an Easy-to-Build Arduino-based Data Logger for Monitoring Water Levels, CREGJ 115, pp21-24. September 2021. (PDF 1.1MB)     [22]

[143] CREG Journal 114, CREGJ 114, pp0-24. June 2021. (PDF 4.9MB)      [99]

[144] Front Cover, CREGJ 114, p1. June 2021. (PDF 1.9MB)     [4]

[145] Contents, CREGJ 114, p2. June 2021. (PDF 289KB)     [53]

[146] News and Notes, CREGJ 114, p2. June 2021. (PDF 289KB)     [53]

[147] The Electronic FieldBook [EFB] as a Tool for Caves Science Operations, CREGJ 114, pp3-6. June 2021. (PDF 741KB)     [9]

[148] Non-linear Calibration of a Digital Compass and Accelerometer, CREGJ 114, pp7-10. June 2021. (PDF 679KB)     [15]

[149] Update: Energy Harvesting, CREGJ 114, p10. June 2021. (PDF 233KB)     [44]

[150] We Hear, CREGJ 114, p11. June 2021. (PDF 358KB)     [7]

[151] The SSB Paradigm for Cave Radio is Outmoded - Is it Time to Move On?, CREGJ 114, pp12-14. June 2021. (PDF 375KB)     [73]

[152] Building a DMR Network, CREGJ 114, pp15-18. June 2021. (PDF 940KB)     [9]

[153] Cave Radio antennas, CREGJ 114, p19. June 2021. (PDF 234KB)     [67]

[154] Buliding Blocks, CREGJ 114, p20. June 2021. (PDF 531KB)     [2]

[155] Letters to the Editor, CREGJ 114, p21. June 2021. (PDF 339KB)     [7]

[156] Web Watch, CREGJ 114, p21. June 2021. (PDF 339KB)     [7]

[157] Rugged Computing: Reviewing the Options, CREGJ 114, pp22-24. June 2021. (PDF 381KB)     [3]

[158] CREG Journal 113, CREGJ 113, pp0-24. March 2021. (PDF 4.8MB)      [100]

[159] Front Cover, CREGJ 113, p1. March 2021. (PDF 2.3MB)     [6]

[160] Contents, CREGJ 113, p2. March 2021. (PDF 310KB)     [62]

[161] News and Notes, CREGJ 113, p2. March 2021. (PDF 310KB)     [62]

[162] Caveatron: An Integrated Cave Survey and Lidar Scanning Instrument, CREGJ 113, pp3-7. March 2021. (PDF 610KB)     [17]

[163] Communications Choices for Cave Rescue, CREGJ 113, p8. March 2021. (PDF 235KB)     [11]

[164] Handheld Laser Scanners: a Market Overview, CREGJ 113, pp9-11. March 2021. (PDF 526KB)     [9]

[165] Update: Battery Polarity Protector, CREGJ 113, p12. March 2021. (PDF 248KB)     [57]

[166] Correction, CREGJ 113, p12. March 2021. (PDF 248KB)     [57]

[167] Update: Pressurised Enclosures, CREGJ 113, p12. March 2021. (PDF 248KB)     [57]

[168] Building Blocks, CREGJ 113, pp13-14. March 2021. (PDF 486KB)     

[169] Web Watch, CREGJ 113, p14. March 2021. (PDF 348KB)     [4]

[170] We Hear, CREGJ 113, p15. March 2021. (PDF 376KB)     [1]

[171] Energy Harvesting with Electrets, CREGJ 113, p16. March 2021. (PDF 230KB)     [44]

[172] GNU Radio: Resource Issues, CREGJ 113, pp17-18. March 2021. (PDF 405KB)     [4]

[173] Data Transmission Through a Long Single-Wire Phone Line, CREGJ 113, pp19-24. March 2021. (PDF 922KB)     [16]

[174] CREG Journal 112, CREGJ 112, pp0-24. December 2020. (PDF 4.3MB)      [91]

[175] Front Cover, CREGJ 112, p1. December 2020. (PDF 921KB)     [4]

[176] Contents, CREGJ 112, p2. December 2020. (PDF 279KB)     [62]

[177] News and Notes, CREGJ 112, p2. December 2020. (PDF 279KB)     [62]

[178] A Cost-effective 3D Photogrammetric Approach for Semi-submerged Caves, CREGJ 112, pp3-6. December 2020. (PDF 609KB)     [10]

[179] Single-board Computers for Data Logging and IoT Applications, CREGJ 112, pp7-9. December 2020. (PDF 633KB)     [6]

[180] Strain Gauge Amplifier for Load Cells and other Fast-acting Signals, CREGJ 112, pp10-11. December 2020. (PDF 584KB)     [7]

[181] We Hear, CREGJ 112, p12. December 2020. (PDF 394KB)     [2]

[182] Underground Trials of Low-cost Coaxial Cables as Leaky Feeders, CREGJ 112, pp13-14. December 2020. (PDF 457KB)     [7]

[183] Building Blocks, CREGJ 112, p15. December 2020. (PDF 352KB)     [1]

[184] An Introduction to GNU Radio, CREGJ 112, pp16-19. December 2020. (PDF 832KB)     [10]

[185] Letters to the Editor, CREGJ 112, pp20-21. December 2020. (PDF 724KB)     [7]

[186] The Adventures of Greg, CREGJ 112, p20. December 2020. (PDF 724KB)     [7]

[187] Web Watch, CREGJ 112, p21. December 2020. (PDF 283KB)     [42]

[188] Update: Regenerative Brake, CREGJ 112, p21. December 2020. (PDF 283KB)     [42]

[189] HF Cave Radio - The Story so Far, CREGJ 112, pp22-24. December 2020. (PDF 402KB)     [9]

[190] CREG Journal 111, CREGJ 111, pp0-28. September 2020. (PDF 5.9MB)      [90]

[191] Front Cover, CREGJ 111, p1. September 2020. (PDF 2.1MB)     [2]

[192] Contents, CREGJ 111, p2. September 2020. (PDF 249KB)     [40]

[193] News and Notes, CREGJ 111, p2. September 2020. (PDF 249KB)     [40]

[194] Internet in a Big Box, CREGJ 111, pp3-4. September 2020. (PDF 341KB)     [4]

[195] Modelling Microwave Propagation along Passages using LiDAR and Ray Tracing, CREGJ 111, pp5-7. September 2020. (PDF 870KB)     [1]

[196] Photo Stacking in Cave Photography, CREGJ 111, pp8-9. September 2020. (PDF 467KB)     [10]

[197] The Parallel-Fed Voltage Multiplier, CREGJ 111, pp10-12,22. September 2020. (PDF 377KB)     [45]

[198] We Hear, CREGJ 111, p13. September 2020. (PDF 353KB)     [2]

[199] Micropower Lesser Horseshoe Bat Sensor, CREGJ 111, pp14-19. September 2020. (PDF 1.5MB)     [8]

[200] Web Watch, CREGJ 111, p19. September 2020. (PDF 372KB)     [2]

[201] The Mystery of the Missing Energy, CREGJ 111, pp20-22. September 2020. (PDF 356KB)     [44]

[202] The Ongoing Story of CaveSim: the Artificial Techno-cave for Training and Education, CREGJ 111, pp23-24. September 2020. (PDF 505KB)     [1]

[203] Building Blocks, CREGJ 111, p25. September 2020. (PDF 439KB)     [1]

[204] Earth Resistivity Surveying: a New Approach, CREGJ 111, pp26-28. September 2020. (PDF 469KB)     [14]

[205] CREG Journal 110, CREGJ 110, pp0-24. June 2020. (PDF 5.0MB)      [97]

[206] Front Cover, CREGJ 110, p1. June 2020. (PDF 1.4MB)     [7]

[207] Contents, CREGJ 110, p2. June 2020. (PDF 366KB)     [50]

[208] Evaluating Coaxial Cables for use as Leaky Feeders, CREGJ 110, pp3-5. June 2020. (PDF 698KB)     [10]

[209] Underwater Robot for Minimally-invasive Cave Research, CREGJ 110, pp6-8. June 2020. (PDF 554KB)     [5]

[210] Letters to the Editor, CREGJ 110, p9. June 2020. (PDF 287KB)     [2]

[211] The Adventures of GREG, CREGJ 110, p9. June 2020. (PDF 287KB)     [2]

[212] Battery Connectors for Caving, CREGJ 110, pp10-11. June 2020. (PDF 710KB)     [4]

[213] Web Watch, CREGJ 110, p11. June 2020. (PDF 389KB)     [1]

[214] Building Blocks, CREGJ 110, p12. June 2020. (PDF 323KB)     [1]

[215] Regenerative Brake Charges Your Caving Lamp Whilst You Abseil, CREGJ 110, pp13-16. June 2020. (PDF 337KB)     [40]

[216] A Store-and-Forward Repeater for use with PMR Radios, CREGJ 110, p17. June 2020. (PDF 292KB)     [5]

[217] Early Radio Broadcasts from Caves, CREGJ 110, pp18-19. June 2020. (PDF 547KB)     [2]

[218] Overview of Radio Repeater Types, CREGJ 110, p20. June 2020. (PDF 438KB)     [5]

[219] Flashgun Slave Redesign Notes, CREGJ 110, p21. June 2020. (PDF 239KB)     [2]

[220] We Hear, CREGJ 110, p22. June 2020. (PDF 324KB)     [4]

[221] goTenna – Mesh Networking for Off-grid Communications, CREGJ 110, pp23-24. June 2020. (PDF 404KB)     [9]

[222] CREG Journal 109, CREGJ 109, pp0-24. March 2020. (PDF 5.2MB)      [98]

[223] Front Cover, CREGJ 109, p1. March 2020. (PDF 2.1MB)     [5]

[224] Contents, CREGJ 109, p2. March 2020. (PDF 247KB)     [46]

[225] A Slave to Photography, CREGJ 109, pp3-5. March 2020. (PDF 510KB)     [5]

[226] Using QGIS as a Data Hub for Cave Projects, CREGJ 109, pp6-10. March 2020. (PDF 1.1MB)     [11]

[227] We Hear, CREGJ 109, p11. March 2020. (PDF 337KB)     [2]

[228] A Human-powered Torch, CREGJ 109, pp12-14. March 2020. (PDF 475KB)     [2]

[229] Letters to the Editor, CREGJ 109, p15. March 2020. (PDF 428KB)     [3]

[230] The Adventures of GREG, CREGJ 109, p15. March 2020. (PDF 428KB)     [3]

[231] Building Blocks, CREGJ 109, p16. March 2020. (PDF 303KB)     [4]

[232] Spotlight on Google Earth, CREGJ 109, pp17-18. March 2020. (PDF 389KB)     [7]

[233] Building Rugged Equipment for Use in Caves, CREGJ 109, pp19-22. March 2020. (PDF 410KB)     [90]

[234] Web Watch, CREGJ 109, p22. March 2020. (PDF 275KB)     [1]

[235] Wet & Dry, CREGJ 109, p22. March 2020. (PDF 275KB)     [1]

[236] Project ELF: the US Navy’s Foray into ELF Communication, CREGJ 109, pp23-24. March 2020. (PDF 611KB)     [15]

[237] CREG Journal 108, CREGJ 108, pp0-24. December 2019. (PDF 5.9MB)      [102]

[238] Front Cover, CREGJ 108, p1. December 2019. (PDF 1.7MB)     [7]

[239] Contents, CREGJ 108, p2. December 2019. (PDF 279KB)     [56]

[240] The Adventures of GREG, CREGJ 108, p2. December 2019. (PDF 279KB)     [56]

[241] Introducing the UNEXMIN Robot for Surveying Flooded Underground Spaces, CREGJ 108, pp3-6. December 2019. (PDF 515KB)     [9]

[242] Building Blocks, CREGJ 108, p7. December 2019. (PDF 365KB)     [2]

[243] A Lesson from Thailand: GIS for Cave Rescue, CREGJ 108, pp8-11. December 2019. (PDF 1010KB)     [11]

[244] Temperature Logging: Does Ogof Gofan Extend Inland?, CREGJ 108, pp12-15. December 2019. (PDF 1.2MB)     [5]

[245] Web Watch, CREGJ 108, p15. December 2019. (PDF 364KB)     [4]

[246] We Hear, CREGJ 108, p16. December 2019. (PDF 267KB)     [5]

[247] The Tinytag Connect System and its Application in the British Cave Monitoring Centre, CREGJ 108, pp17-20. December 2019. (PDF 906KB)     [7]

[248] The Hidden Earth Projector Shutters, CREGJ 108, pp21-22. December 2019. (PDF 393KB)     [4]

[249] Autumn 2019 CREG Field Meeting, CREGJ 108, pp23-24. December 2019. (PDF 556KB)     [6]

[250] CREG Journal 107, CREGJ 107, pp0-24. September 2019. (PDF 3.0MB)      [107]

[251] Front Cover, CREGJ 107, p1. September 2019. (PDF 365KB)     [9]

[252] Contents, CREGJ 107, p2. September 2019. (PDF 257KB)     [49]

[253] Introducing the Elios 2 Drone for Aerial Inspections of Confined Spaces, CREGJ 107, pp3-5. September 2019. (PDF 492KB)     [18]

[254] The Inductance of a Wire Hoop, CREGJ 107, p6. September 2019. (PDF 251KB)     [128]

[255] Determining Ammonia Concentrations in Bat Caves with Passive Air Samplers, CREGJ 107, pp7-9. September 2019. (PDF 549KB)     [3]

[256] Wet & Dry, CREGJ 107, p10. September 2019. (PDF 239KB)     [10]

[257] Response Characteristics of Instruments and Sensors, CREGJ 107, pp11-12. September 2019. (PDF 429KB)     [7]

[258] Building Blocks, CREGJ 107, p13. September 2019. (PDF 258KB)     [5]

[259] Using Cave Radios for Combined Speech and Radiolocation, CREGJ 107, pp14-16. September 2019. (PDF 785KB)     [12]

[260] The Radiation Efficiency of a Small Loop Antenna, CREGJ 107, pp17-18. September 2019. (PDF 313KB)     [114]

[261] Using Avalanche Beacons in Cave Exploration, CREGJ 107, pp19-20. September 2019. (PDF 361KB)     [14]

[262] Letters to the Editor, CREGJ 107, p21. September 2019. (PDF 283KB)     [5]

[263] Web Watch, CREGJ 107, p21. September 2019. (PDF 283KB)     [5]

[264] We Hear, CREGJ 107, p22. September 2019. (PDF 298KB)     [4]

[265] Data Transmission at the Cave Monitoring Centre, CREGJ 107, p23. September 2019. (PDF 415KB)     [7]

[266] The Adventures of GREG, CREGJ 107, p24. September 2019. (PDF 285KB)     [1]

[267] CREG Journal 106, CREGJ 106, pp0-24. June 2019. (PDF 5.9MB)      [107]

[268] Front Cover, CREGJ 106, p1. June 2019. (PDF 1.8MB)     [9]

[269] Contents, CREGJ 106, p2. June 2019. (PDF 223KB)     [55]

[270] Detecting Gasses Underground: a Practical Guide for Safety and Scientific Study, CREGJ 106, pp3-6. June 2019. (PDF 486KB)     [16]

[271] Carbon Dioxide Data Logging in Caves – Part 2, CREGJ 106, pp7-10. June 2019. (PDF 1.1MB)     [18]

[272] Building Blocks, CREGJ 106, p11. June 2019. (PDF 289KB)     [2]

[273] An Android App using Phone Angle Sensors for Radiolocation Depth Determination, CREGJ 106, p12. June 2019. (PDF 316KB)     [11]

[274] An Android Scientific Calculator for Depth Calculation in Radiolocation, CREGJ 106, pp13-14. June 2019. (PDF 684KB)     [10]

[275] Web Watch, CREGJ 106, p14. June 2019. (PDF 304KB)     [2]

[276] High-speed Data Links over Copper Conductors for Harsh Terrain Applications, CREGJ 106, pp15-16. June 2019. (PDF 512KB)     [3]

[277] We Hear, CREGJ 106, p17. June 2019. (PDF 473KB)     [5]

[278] BCRA Field Meeting at the British Cave Monitoring Centre, CREGJ 106, pp18-19. June 2019. (PDF 329KB)     [6]

[279] The Role of GIS in Finding New Caves, CREGJ 106, pp20-22. June 2019. (PDF 791KB)     [6]

[280] An Improved Smoke Generator for the Visualization of Airflow in Caves, CREGJ 106, pp23-24. June 2019. (PDF 833KB)     [9]

[281] The Adventures of GREG, CREGJ 106, p24. June 2019. (PDF 720KB)     [3]

[282] CREG Journal 105, CREGJ 105, pp0-24. March 2019. (PDF 10.4MB)      [100]

[283] Front Cover, CREGJ 105, p1. March 2019. (PDF 2.8MB)     [4]

[284] Contents, CREGJ 105, p2. March 2019. (PDF 275KB)     [50]

[285] Near Infrared Imaging for Recording Archaeological Cave Art, CREGJ 105, pp3-5. March 2019. (PDF 511KB)     [7]

[286] 3D Printing of Caves Goes Mainstream, CREGJ 105, pp6-7. March 2019. (PDF 610KB)     [9]

[287] A Flashbulb Moment, CREGJ 105, pp8-11. March 2019. (PDF 930KB)     [3]

[288] Photographing the Fluorescent Minerals of New Jersey, CREGJ 105, pp12-14. March 2019. (PDF 1.7MB)     [3]

[289] We Hear, CREGJ 105, p15. March 2019. (PDF 282KB)     [3]

[290] Thermal Imaging – Cave Applications, CREGJ 105, pp16-18. March 2019. (PDF 1.9MB)     [10]

[291] Letters to the Editor, CREGJ 105, p19. March 2019. (PDF 340KB)     [5]

[292] Web Watch, CREGJ 105, p19. March 2019. (PDF 340KB)     [5]

[293] Building Blocks, CREGJ 105, p20. March 2019. (PDF 278KB)     [7]

[294] Cavern Imaging using Laser-Stimulated Fluorescence, CREGJ 105, pp21-24. March 2019. (PDF 2.6MB)     [8]

[295] The Adventures of GREG, CREGJ 105, p24. March 2019. (PDF 239KB)     

[296] CREG Journal 104, CREGJ 104, pp0-24. December 2018. (PDF 4.6MB)      [83]

[297] Front Cover, CREGJ 104, p1. December 2018. (PDF 1.1MB)     [8]

[298] Contents, CREGJ 104, p2. December 2018. (PDF 567KB)     [48]

[299] Simple Enclosure is Waterproof to 400 Metres, CREGJ 104, pp3-6. December 2018. (PDF 529KB)     [103]

[300] Introduction to Cave Radiolocation, CREGJ 104, pp7-8. December 2018. (PDF 508KB)     [28]

[301] Cave Exploration with the Inkonova Hybrid Drone Family, CREGJ 104, pp9-11. December 2018. (PDF 561KB)     [12]

[302] Wet & Dry, CREGJ 104, p12. December 2018. (PDF 269KB)     [5]

[303] The Hidden Earth Timetable Display – Part 3, CREGJ 104, pp13-15. December 2018. (PDF 282KB)     [33]

[304] Letters and Announcements, CREGJ 104, p16. December 2018. (PDF 273KB)     

[305] Web Watch, CREGJ 104, p16. December 2018. (PDF 273KB)     

[306] We Hear, CREGJ 104, p17. December 2018. (PDF 269KB)     [1]

[307] Carbon Dioxide Data Logging in Caves – Part 1, CREGJ 104, pp18-19. December 2018. (PDF 509KB)     [14]

[308] Radiolocation at Pen Park Hole, CREGJ 104, p20. December 2018. (PDF 261KB)     [3]

[309] Bluetooth on a Budget, CREGJ 104, pp21-22. December 2018. (PDF 641KB)     [3]

[310] CREG Field Meeting: October 2018, CREGJ 104, p23. December 2018. (PDF 250KB)     [1]

[311] The Adventures of GREG, CREGJ 104, p24. December 2018. (PDF 893KB)     

[312] CREG Journal 103, CREGJ 103, pp0-24. September 2018. (PDF 5.5MB)      [73]

[313] Front Cover, CREGJ 103, p1. September 2018. (PDF 1.6MB)     [1]

[314] Contents, CREGJ 103, p2. September 2018. (PDF 240KB)     [57]

[315] Simple SSTV for Cave-to-Surface Image Transfer, CREGJ 103, pp3-4. September 2018. (PDF 429KB)     [13]

[316] Introducing the SubPhone: an SDR-based Cave Radio, CREGJ 103, pp5-7. September 2018. (PDF 1.6MB)     [33]

[317] Wet & Dry, CREGJ 103, p8. September 2018. (PDF 240KB)     [2]

[318] Thermal Imaging – a 2018 Perspective on IR Camera Advances, CREGJ 103, pp9-11. September 2018. (PDF 476KB)     [8]

[319] Micro HeyPhone: Update to V3, CREGJ 103, p12. September 2018. (PDF 278KB)     [70]

[320] Off-the-Shelf LED Lamps for Cave Photography, CREGJ 103, pp13-14. September 2018. (PDF 418KB)     [4]

[321] Web Watch, CREGJ 103, p14. September 2018. (PDF 335KB)     

[322] Mountain and Cave Rescue Radio Systems 'Go Digital', CREGJ 103, pp15-16. September 2018. (PDF 402KB)     [11]

[323] We Hear, CREGJ 103, p17. September 2018. (PDF 425KB)     

[324] Practical Geophysical Methods of Cave Detection, CREGJ 103, pp18-21. September 2018. (PDF 818KB)     [9]

[325] The Hidden Earth Timetable Display – Part 2, CREGJ 103, pp22-24. September 2018. (PDF 466KB)     [45]

[326] The Adventures of GREG, CREGJ 103, p24. September 2018. (PDF 379KB)     

[327] CREG Journal 102, CREGJ 102, pp0-24. June 2018. (PDF 4.8MB)      [56]

[328] Front Cover, CREGJ 102, p1. June 2018. (PDF 2.1MB)     [3]

[329] Contents, CREGJ 102, p2. June 2018. (PDF 238KB)     [46]

[330] LoRaWAN and its Application to Cave Data Logging, CREGJ 102, pp3-4. June 2018. (PDF 374KB)     [8]

[331] The Hidden Earth Timetable Display, CREGJ 102, pp5-7. June 2018. (PDF 439KB)     [48]

[332] Setting up the Micro HeyPhone, CREGJ 102, pp8-10. June 2018. (PDF 364KB)     [37]

[333] Letters to the Editor, CREGJ 102, p10. June 2018. (PDF 234KB)     [1]

[334] Web Watch, CREGJ 102, p10. June 2018. (PDF 234KB)     [1]

[335] Wet & Dry, CREGJ 102, p11. June 2018. (PDF 196KB)     [2]

[336] SMD Construction at Home, CREGJ 102, pp12-14. June 2018. (PDF 445KB)     [31]

[337] Signal-to-Noise Ratio and Cave-to-Surface Communications, CREGJ 102, pp15-16. June 2018. (PDF 426KB)     [11]

[338] Early Development of Guidewire Radio Underground, CREGJ 102, pp17-18. June 2018. (PDF 954KB)     [2]

[339] We Hear..., CREGJ 102, p19. June 2018. (PDF 345KB)     [3]

[340] CREG Field Meeting: Shropshire, May 2018, CREGJ 102, pp20-21. June 2018. (PDF 357KB)     [2]

[341] Automated Speech Intelligibility Testing with the ABC-MRT, CREGJ 102, pp22-24. June 2018. (PDF 319KB)     

[342] CREG Journal 101, CREGJ 101, pp0-24. March 2018. (PDF 6.0MB)      [56]

[343] Front Cover, CREGJ 101, p1. March 2018. (PDF 2.5MB)     [4]

[344] Contents, CREGJ 101, p2. March 2018. (PDF 323KB)     [47]

[345] Overcoming Flight Restrictions: Using non-Lithium Batteries with LED-based Caving Lamps, CREGJ 101, pp3-7. March 2018. (PDF 663KB)     [6]

[346] Letters to the Editor, CREGJ 101, p7. March 2018. (PDF 162KB)     [1]

[347] The British Cave-Monitoring Centre, CREGJ 101, p8. March 2018. (PDF 152KB)     [69]

[348] caveGEOmap: User-friendly Cave Mapping Software, CREGJ 101, pp9-12. March 2018. (PDF 747KB)     [8]

[349] Web Watch, CREGJ 101, p12. March 2018. (PDF 244KB)     

[350] The Winter Receiver: a Design for Radiolocation and Communication, CREGJ 101, pp13-16. March 2018. (PDF 819KB)     [16]

[351] Wet & Dry, CREGJ 101, p17. March 2018. (PDF 272KB)     [2]

[352] Micro HeyPhone: Update to V2, CREGJ 101, pp18-19. March 2018. (PDF 372KB)     [43]

[353] We Hear..., CREGJ 101, p20. March 2018. (PDF 322KB)     [4]

[354] Building the Micro HeyPhone, CREGJ 101, pp21-24. March 2018. (PDF 796KB)     [53]

[355] CREG Journal 100, CREGJ 100, pp0-32. December 2017. (PDF 4.8MB)      [59]

[356] Front Cover, CREGJ 100, p1. December 2017. (PDF 819KB)     [23]

[357] Contents, CREGJ 100, p2. December 2017. (PDF 189KB)     [48]

[358] The Electronics of Dreams, CREGJ 100, pp3-4. December 2017. (PDF 472KB)     [2]

[359] The Micro HeyPhone Project: a Conventional Cave Radio for a New Generation, CREGJ 100, pp5-10. December 2017. (PDF 1.3MB)     [77]

[360] DMT PILOT 3D – a New Approach to 3D Documentation of Subterranean Cavities, CREGJ 100, pp11-14. December 2017. (PDF 678KB)     [58]

[361] Notes and Announcements, CREGJ 100, p14. December 2017. (PDF 275KB)     

[362] We Hear..., CREGJ 100, p15. December 2017. (PDF 374KB)     

[363] 100 and Beyond: Readers Recall, CREGJ 100, pp16-17. December 2017. (PDF 223KB)     

[364] A Digital Future for the Wemyss Caves, Scotland, CREGJ 100, pp18-22. December 2017. (PDF 816KB)     [1]

[365] The CREG Journal Search Engine, CREGJ 100, pp23-24. December 2017. (PDF 214KB)     

[366] Letters to the Editor, CREGJ 100, p25. December 2017. (PDF 173KB)     [1]

[367] Yorkshire Dales Field Meeting: Autumn 2017, CREGJ 100, p26. December 2017. (PDF 362KB)     [21]

[368] Wet & Dry, CREGJ 100, p28. December 2017. (PDF 285KB)     [1]

[369] A 7MHz Beacon Transmitter for HF Cave Radio Experimentation, CREGJ 100, pp29-30. December 2017. (PDF 373KB)     [6]

[370] Web Watch, CREGJ 100, p30. December 2017. (PDF 285KB)     

[371] Using an Audio DSP Filter with a Cave Radio, CREGJ 100, pp31-32. December 2017. (PDF 408KB)     [2]

[372] CREG Journal 99, CREGJ 99, pp0-24. September 2017. (PDF 11.9MB)      [48]

[373] Front Cover, CREGJ 99, p1. September 2017. (PDF 1.5MB)     [1]

[374] Contents, CREGJ 99, p2. September 2017. (PDF 961KB)     [50]

[375] Capturing the Invisible: Infrared Cave Photography, CREGJ 99, pp3-5. September 2017. (PDF 3.0MB)     [3]

[376] The Summer Beacon Project: Radiolocation and Communication All-in-One, CREGJ 99, pp6-9. September 2017. (PDF 1.8MB)     [9]

[377] Using a Stand to Improve the Accuracy of DistoX Calibration, CREGJ 99, pp10-11. September 2017. (PDF 239KB)     [6]

[378] We Hear..., CREGJ 99, p12. September 2017. (PDF 186KB)     [1]

[379] CREG Field Meeting Report - Spring 2017, CREGJ 99, pp13-14. September 2017. (PDF 242KB)     

[380] Letters and Notes, CREGJ 99, p15. September 2017. (PDF 40KB)     

[381] Web Watch, CREGJ 99, p15. September 2017. (PDF 40KB)     

[382] A Practical Guide to Cave Video Photography, CREGJ 99, pp16-19. September 2017. (PDF 1.7MB)     [4]

[383] Wet & Dry, CREGJ 99, p20. September 2017. (PDF 86KB)     [1]

[384] RF Interference Caused by LED Lamps, CREGJ 99, pp21-24. September 2017. (PDF 3.1MB)     [2]

[385] CREG Journal 98, CREGJ 98, pp0-24. June 2017. (PDF 4.5MB)      [41]

[386] Front Cover, CREGJ 98, p1. June 2017. (PDF 295KB)     

[387] Contents, CREGJ 98, p2. June 2017. (PDF 393KB)     [41]

[388] The Adventures of GREG, CREGJ 98, p2. June 2017. (PDF 393KB)     [41]

[389] Making Films of the Underground: Video Recording in the Dark, CREGJ 98, pp3-6. June 2017. (PDF 514KB)     [4]

[390] The Ultimate in 3D Photography: a Basic Introduction to Holography, CREGJ 98, pp7-9. June 2017. (PDF 393KB)     [1]

[391] Auriga – Looking Back at 15 Years of Development, CREGJ 98, pp10-12. June 2017. (PDF 199KB)     [3]

[392] We Hear..., CREGJ 98, p13. June 2017. (PDF 97KB)     [1]

[393] Introduction to Digital Holography, CREGJ 98, pp14-15. June 2017. (PDF 111KB)     

[394] Wet & Dry, CREGJ 98, p16. June 2017. (PDF 246KB)     

[395] Outlining the Architecture of the Nicola 3Z Cave Radio, CREGJ 98, pp17-19. June 2017. (PDF 621KB)     [14]

[396] Letters and Notes, CREGJ 98, p20. June 2017. (PDF 76KB)     

[397] Web Watch, CREGJ 98, p20. June 2017. (PDF 76KB)     

[398] Speleo-holography: Making Holograms in the Cave Environment, CREGJ 98, pp21-24. June 2017. (PDF 1.7MB)     [1]

[399] CREG Journal 97, CREGJ 97, pp0-24. March 2017. (PDF 2.8MB)      [38]

[400] Front Cover, CREGJ 97, p1. March 2017. (PDF 528KB)     

[401] Contents, CREGJ 97, p2. March 2017. (PDF 46KB)     [42]

[402] Cave Surveying with the GeoSLAM ZEB-REVO, CREGJ 97, pp3-5. March 2017. (PDF 406KB)     [1]

[403] Wet & Dry, CREGJ 97, p6. March 2017. (PDF 181KB)     

[404] Cave Radio and the Loran-C Spectrum, CREGJ 97, pp7-9. March 2017. (PDF 384KB)     [3]

[405] Cave Radio and the Loran-C Spectrum [cregf], CREGJ 97.   March 2017. See further reading on the CREG forum

[406] ZEB-CAM, CREGJ 97, p9. March 2017. (PDF 101KB)     [1]

[407] Letters and Notes, CREGJ 97, p10. March 2017. (PDF 108KB)     

[408] Web Watch, CREGJ 97, p10. March 2017. (PDF 108KB)     

[409] The Principle of Forward Error Correction, CREGJ 97, pp11-16. March 2017. (PDF 269KB)     [2]

[410] We Hear..., CREGJ 97, p17. March 2017. (PDF 94KB)     

[411] Developing a Static Rope Tester – Work in Progress, CREGJ 97, p18. March 2017. (PDF 127KB)     

[412] Introducing Data Modes for Cave Communications, CREGJ 97, pp19-21. March 2017. (PDF 311KB)     [7]

[413] Underwater LiDAR – Bringing Laser Scanning to New Depths, CREGJ 97, pp22-24. March 2017. (PDF 503KB)     [3]

[414] The Adventures of GREG, CREGJ 97, p24. March 2017. (PDF 189KB)     

[415] CREG Journal 96, CREGJ 96, pp0-24. December 2016. (PDF 16.1MB)      [41]

[416] Front Cover, CREGJ 96, p1. December 2016. (PDF 1.2MB)     

[417] Contents, CREGJ 96, p2. December 2016. (PDF 562KB)     [121]

[418] The Mines of Cornwall and West Devon: A Three-dimensional Model, CREGJ 96, pp3-5. December 2016. (PDF 5.1MB)     [2]

[419] The Intriguing Tale of the Electromechanical VLF Transmitter, CREGJ 96, pp6-7. December 2016. (PDF 618KB)     [3]

[420] The Poor Man's Laser Scanner: A Simple Method of 3D Cave Surveying, CREGJ 96, pp8-14. December 2016. (PDF 2.2MB)     [11]

[421] We Hear..., CREGJ 96, p15. December 2016. (PDF 413KB)     [1]

[422] Cave Thermal Imaging with a Smartphone?, CREGJ 96, pp16-19. December 2016. (PDF 3.9MB)     [3]

[423] Wet & Dry, CREGJ 96, p20. December 2016. (PDF 440KB)     [2]

[424] Letters and Notes, CREGJ 96, p21. December 2016. (PDF 248KB)     

[425] Web Watch, CREGJ 96, p21. December 2016. (PDF 248KB)     

[426] CREG Field Meeting: Autumn 2016, CREGJ 96, pp22-24. December 2016. (PDF 3.2MB)     

[427] The Adventures of GREG, CREGJ 96, p24. December 2016. (PDF 1.9MB)     

[428] CREG Journal 95, CREGJ 95, pp0-24. September 2016. (PDF 11.8MB)      [41]

[429] Front Cover, CREGJ 95, p1. September 2016. (PDF 2.1MB)     [4]

[430] Contents, CREGJ 95, p2. September 2016. (PDF 260KB)     [44]

[431] The Importance of Good Ground Connection in Cave Radio, CREGJ 95, pp3-4. September 2016. (PDF 824KB)     [5]

[432] Wet & Dry, CREGJ 95, p5. September 2016. (PDF 649KB)     

[433] A Battery Power Switch for a Bosch UNEO Drill, CREGJ 95, pp6-8. September 2016. (PDF 1.4MB)     [3]

[434] Web Watch, CREGJ 95, p8. September 2016. (PDF 394KB)     

[435] We Hear..., CREGJ 95, p9. September 2016. (PDF 518KB)     

[436] Cave and Mine Rescue Communications – the Early Days, CREGJ 95, pp10-11. September 2016. (PDF 1001KB)     [3]

[437] HF Dipole and Loop Antenna Orientation Trials, CREGJ 95, pp12-13. September 2016. (PDF 921KB)     [3]

[438] Diesel Cave Pollution Data Logging, CREGJ 95, pp14-16. September 2016. (PDF 677KB)     

[439] Letters and Notes, CREGJ 95, p16. September 2016. (PDF 265KB)     [2]

[440] Nicola 3: Introducing a New Rescue Cave Radio, CREGJ 95, pp17-19. September 2016. (PDF 1.7MB)     [17]

[441] Bat Detector Technology Review, CREGJ 95, p20. September 2016. (PDF 601KB)     

[442] EuroSpeleo 2016, CREGJ 95, pp21-24. September 2016. (PDF 3.4MB)     [1]

[443] The Adventures of GREG, CREGJ 95, p24. September 2016. (PDF 1.9MB)     

[444] CREG Journal 94, CREGJ 94, pp0-24. June 2016. (PDF 10.6MB)      [44]

[445] Front Cover, CREGJ 94, p1. June 2016. (PDF 2.5MB)     

[446] Contents, CREGJ 94, p2. June 2016. (PDF 340KB)     [32]

[447] Radio Propagation in Standedge Tunnel, CREGJ 94, pp3-5. June 2016. (PDF 285KB)     [143]

[448] Laser Scanning the World's Largest Cave Chambers, CREGJ 94, pp6-10. June 2016. (PDF 3.0MB)     [1]

[449] John Hey – an Appreciation, CREGJ 94, pp11-12. June 2016. (PDF 603KB)     

[450] 802.11af & 802.11ah: Examining the Next Generation of Wi-Fi, CREGJ 94, pp13-14. June 2016. (PDF 371KB)     [3]

[451] We Hear..., CREGJ 94, pp15-16. June 2016. (PDF 1.5MB)     

[452] Wet & Dry, CREGJ 94, p16. June 2016. (PDF 798KB)     

[453] Electric Fields around an Underground, Radiating Electric Dipole, CREGJ 94, pp17-19. June 2016. (PDF 386KB)     [2]

[454] Letters and Notes, CREGJ 94, p19. June 2016. (PDF 274KB)     

[455] Web Watch, CREGJ 94, p19. June 2016. (PDF 274KB)     

[456] Introducing Sonar Technology as a Tool for Underwater Cave Surveying, CREGJ 94, pp20-23. June 2016. (PDF 2.6MB)     [3]

[457] Searching the CREG Journal Contents Lists, CREGJ 94, p24. June 2016. (PDF 715KB)     

[458] The Adventures of GREG, CREGJ 94, p24. June 2016. (PDF 715KB)     

[459] CREG Journal 93, CREGJ 93, pp0-24. March 2016. (PDF 10.3MB)      [38]

[460] Front Cover, CREGJ 93, p1. March 2016. (PDF 1.2MB)     

[461] Contents, CREGJ 93, p2. March 2016. (PDF 259KB)     [87]

[462] A Simple Laser Technique for Capturing Cross-sections in Dry and Underwater Caves, CREGJ 93, pp3-5. March 2016. (PDF 915KB)     [1]

[463] Capturing Cross-sections using a Laser Pointer, CREGJ 93, pp6-7. March 2016. (PDF 886KB)     [2]

[464] Signal Phase Cannot Be Determined from a Fourier Transform of Sampled Data, CREGJ 93, pp8-9. March 2016. (PDF 241KB)     [79]

[465] Cave Flood Pulse Data Logging in OFD1, CREGJ 93, pp10-12. March 2016. (PDF 1.2MB)     [7]

[466] We Hear, CREGJ 93, pp13-14. March 2016. (PDF 1.1MB)     [1]

[467] Wet & Dry, CREGJ 93, pp15-16. March 2016. (PDF 610KB)     

[468] French Ground-based Communication in World War 1, CREGJ 93, pp17-18. March 2016. (PDF 812KB)     [3]

[469] Capturing the World's Largest Cave in 360 Degrees, CREGJ 93, pp19-21. March 2016. (PDF 3.7MB)     [1]

[470] Letters and Notes, CREGJ 93, p22. March 2016. (PDF 271KB)     

[471] Web Watch, CREGJ 93, p22. March 2016. (PDF 271KB)     

[472] Introducing ZEB REVO: a Major Improvement in Handheld Laser Scanning, CREGJ 93, pp23-24. March 2016. (PDF 1.2MB)     [1]

[473] The Adventures of GREG, CREGJ 93, p24. March 2016. (PDF 889KB)     

[474] CREG Journal 92, CREGJ 92, pp0-24. December 2015. (PDF 17.7MB)      [43]

[475] Front Cover, CREGJ 92, p1. December 2015. (PDF 5.1MB)     [2]

[476] Contents, CREGJ 92, p2. December 2015. (PDF 240KB)     [42]

[477] Introduction to High Frequency Cave Radio, CREGJ 92, pp3-5. December 2015. (PDF 1.3MB)     [2]

[478] Off-the-Shelf Equipment for HF Cave Radio, CREGJ 92, pp6-8. December 2015. (PDF 1.2MB)     [1]

[479] An Experimental Appraisal of Through-Rock Communication at 7MHz, CREGJ 92, pp9-10. December 2015. (PDF 687KB)     [2]

[480] We Hear, CREGJ 92, p11. December 2015. (PDF 542KB)     [1]

[481] Prototyping a 3D Scanner, CREGJ 92, pp12-13. December 2015. (PDF 1.6MB)     [4]

[482] Improving Fringe Area Network Connections, CREGJ 92, pp14-16. December 2015. (PDF 4.4MB)     

[483] Comparison of Ferrite Antennas and Earth-Current Electrodes, CREGJ 92, pp17-20. December 2015. (PDF 2.0MB)     [5]

[484] Letters and Announcements, CREGJ 92, p21. December 2015. (PDF 284KB)     

[485] Web Watch, CREGJ 92, p21. December 2015. (PDF 284KB)     

[486] CREG Field Meeting: Summer 2015, CREGJ 92, pp22-24. December 2015. (PDF 2.1MB)     [1]

[487] The Adventures of GREG, CREGJ 92, p24. December 2015. (PDF 1.5MB)     

[488] CREG Journal 91, CREGJ 91, pp0-24. September 2015. (PDF 8.3MB)      [46]

[489] Front Cover, CREGJ 91, p1. September 2015. (PDF 488KB)     [3]

[490] Contents, CREGJ 91, p2. September 2015. (PDF 261KB)     [41]

[491] Data Mules for Cave-to-Surface Data Transfer, CREGJ 91, pp3-9. September 2015. (PDF 1.9MB)     [3]

[492] We Hear, CREGJ 91, p10. September 2015. (PDF 329KB)     

[493] The CREG Forum, CREGJ 91, pp11-12. September 2015. (PDF 857KB)     

[494] Letters and Announcements, CREGJ 91, p13. September 2015. (PDF 908KB)     

[495] Web Watch, CREGJ 91, p13. September 2015. (PDF 908KB)     

[496] Predicting Microwave Propagation along the Passages of Natural Caves, CREGJ 91, pp14-18. September 2015. (PDF 1.6MB)     [3]

[497] Introducing the Cave-Link System, CREGJ 91, pp19-21. September 2015. (PDF 996KB)     [8]

[498] Black Meg 3 Low-cost Through-rock Messaging System, CREGJ 91, pp22-24. September 2015. (PDF 2.5MB)     [5]

[499] The Adventures of GREG, CREGJ 91, p24. September 2015. (PDF 1.9MB)     

[500] CREG Journal 90, CREGJ 90, pp0-24. June 2015. (PDF 10.0MB)      [33]

[501] Front Cover, CREGJ 90, p1. June 2015. (PDF 1.6MB)     [1]

[502] Contents, CREGJ 90, p2. June 2015. (PDF 252KB)     [40]

[503] Bringing Computational Photography to Cenotes and Flooded Caves, CREGJ 90, pp3-5. June 2015. (PDF 3.5MB)     

[504] Using AMSS on BBC Radio 4 to Send Data to Subsurface Locations, CREGJ 90, p6. June 2015. (PDF 217KB)     [96]

[505] An Arduino-Compatible Bat Call Data Recorder, CREGJ 90, pp7-8. June 2015. (PDF 546KB)     

[506] Stereoscopic Vision with Reduced Definition in One Eye, CREGJ 90, p9. June 2015. (PDF 161KB)     [104]

[507] Field Meeting Preview, CREGJ 90, p10. June 2015. (PDF 574KB)     

[508] Improving the Quality of Light in White LEDs, CREGJ 90, pp11-13. June 2015. (PDF 590KB)     [1]

[509] Developing a Dynamic Rope Tester - Work Still in Progress, CREGJ 90, pp14-17. June 2015. (PDF 2.1MB)     

[510] We Hear, CREGJ 90, p18. June 2015. (PDF 273KB)     

[511] Letters and Announcements, CREGJ 90, p19. June 2015. (PDF 218KB)     

[512] Web Watch, CREGJ 90, p19. June 2015. (PDF 218KB)     

[513] Introducing ICEMS - the Integrated Caves Environmental Monitoring System, CREGJ 90, pp20-24. June 2015. (PDF 1.6MB)     

[514] The Adventures of GREG, CREGJ 90, p24. June 2015. (PDF 671KB)     

[515] CREG Journal 89, CREGJ 89, pp0-24. March 2015. (PDF 11.5MB)      [33]

[516] Front Cover, CREGJ 89, p1. March 2015. (PDF 4.5MB)     [2]

[517] Contents, CREGJ 89, p2. March 2015. (PDF 240KB)     [22]

[518] Introducing OpenROV: a Low-cost Vehicle for Remote Underwater Exploration, CREGJ 89, pp3-5. March 2015. (PDF 1.7MB)     [4]

[519] Understanding and Combating Reverberation in Underground Spaces, CREGJ 89, pp6-8. March 2015. (PDF 451KB)     

[520] Web Watch, CREGJ 89, p8. March 2015. (PDF 228KB)     

[521] The SPELEO-GRAPH LB Digital Transmission System for VLF, CREGJ 89, pp9-11. March 2015. (PDF 1.1MB)     [3]

[522] We Hear, CREGJ 89, p12. March 2015. (PDF 412KB)     [1]

[523] Determining the Photographic Guide Number of an LED, CREGJ 89, pp13-16. March 2015. (PDF 385KB)     [98]

[524] FERRA - A New Portable Underground Communication Transceiver, CREGJ 89, pp17-19. March 2015. (PDF 2.1MB)     [2]

[525] CREG Summer Field Meeting, CREGJ 89, p19. March 2015. (PDF 792KB)     [2]

[526] ZEB1 in Skirwith Cave, CREGJ 89, p20. March 2015. (PDF 506KB)     [5]

[527] Letters and Notes, CREGJ 89, p21. March 2015. (PDF 507KB)     [1]

[528] Quantifying Light Quality in White LEDs, CREGJ 89, pp22-24. March 2015. (PDF 997KB)     [1]

[529] The Adventures of GREG, CREGJ 89, p24. March 2015. (PDF 767KB)     

[530] CREG Journal 88, CREGJ 88, pp0-24. December 2014. (PDF 11.6MB)      [32]

[531] Front Cover, CREGJ 88, p1. December 2014. (PDF 1.3MB)     [1]

[532] Contents, CREGJ 88, p2. December 2014. (PDF 240KB)     [43]

[533] Capacitively-Coupled Wire Antennas for Cave Radios, CREGJ 88, pp3-4. December 2014. (PDF 632KB)     [2]

[534] The Next Generation of the DistoX Cave Surveying Instrument, CREGJ 88, pp5-8. December 2014. (PDF 957KB)     [5]

[535] Letters, CREGJ 88, p8. December 2014. (PDF 522KB)     [1]

[536] Web Watch, CREGJ 88, p8. December 2014. (PDF 522KB)     [1]

[537] We Hear, CREGJ 88, p9. December 2014. (PDF 320KB)     [1]

[538] Lava Tube Detection Using a Wireless Magnetometer, CREGJ 88, pp10-12. December 2014. (PDF 1.4MB)     

[539] How Earth-Current Antennas Really Work, CREGJ 88, pp13-14. December 2014. (PDF 265KB)     [152]

[540] Power Supplies for 'Off-Grid' Operation, CREGJ 88, pp15-18. December 2014. (PDF 1.5MB)     

[541] A Data Logging Draught Detector, CREGJ 88, pp19-21. December 2014. (PDF 747KB)     [8]

[542] CREG Field Meeting: Autumn 2014, CREGJ 88, pp22-24. December 2014. (PDF 5.8MB)     

[543] The Adventures of GREG, CREGJ 88, p24. December 2014. (PDF 2.2MB)     

[544] CREG Journal 87, CREGJ 87, pp0-24. September 2014. (PDF 17.2MB)      [31]

[545] Front Cover, CREGJ 87, p1. September 2014. (PDF 3.3MB)     

[546] Contents, CREGJ 87, p2. September 2014. (PDF 226KB)     [160]

[547] Low-Power, Low-Cost Data Logger and Rain Gauge, CREGJ 87, pp3-5. September 2014. (PDF 2.1MB)     [4]

[548] We Hear, CREGJ 87, p6,18. September 2014. (PDF 675KB)     [1]

[549] South African Show Cave Communication System, CREGJ 87, pp7-9. September 2014. (PDF 3.5MB)     [1]

[550] Web Watch, CREGJ 87, p9. September 2014. (PDF 1.9MB)     [1]

[551] The ooLiTE: Thermoelectric Lighting for Cavers?, CREGJ 87, pp10-15. September 2014. (PDF 3.6MB)     

[552] Upgrading Caving Lamps the Easy Way, CREGJ 87, pp16-18. September 2014. (PDF 1.3MB)     [1]

[553] Letters and Notes, CREGJ 87, p19. September 2014. (PDF 339KB)     

[554] Introducing NMR Geophysics, CREGJ 87, pp20-22. September 2014. (PDF 1.9MB)     [2]

[555] GSM Underground, CREGJ 87, pp23-24. September 2014. (PDF 2.0MB)     [1]

[556] CREG Journal 86, CREGJ 86, pp0-24. June 2014. (PDF 12.6MB)      [31]

[557] Front Cover, CREGJ 86, p1. June 2014. (PDF 2.5MB)     

[558] Contents, CREGJ 86, p2. June 2014. (PDF 522KB)     [124]

[559] Seismic Through-Rock Communication - an Alternative to Electrical Methods, CREGJ 86, pp3-6. June 2014. (PDF 2.2MB)     

[560] Caver Counting - Why and How, CREGJ 86, pp7-11. June 2014. (PDF 1.7MB)     [2]

[561] The Strange Tale of James Rogers' Underground Antenna, CREGJ 86, pp12-13. June 2014. (PDF 588KB)     [1]

[562] Detecting Lava Tubes with a Smartphone?, CREGJ 86, pp14-19. June 2014. (PDF 1.9MB)     [1]

[563] Letter and Notes, CREGJ 86, p19. June 2014. (PDF 311KB)     [1]

[564] Web Watch, CREGJ 86, p19. June 2014. (PDF 311KB)     [1]

[565] We Hear, CREGJ 86, p20. June 2014. (PDF 920KB)     

[566] Handheld Laser Scanning: a Radically New Approach to Cave Surveying, CREGJ 86, pp21-24. June 2014. (PDF 3.4MB)     [6]

[567] The Adventures of GREG, CREGJ 86, p24. June 2014. (PDF 1.7MB)     [1]

[568] CREG Journal 85, CREGJ 85, pp0-24. March 2014. (PDF 6.4MB)      [31]

[569] Front Cover, CREGJ 85, p1. March 2014. (PDF 2.3MB)     

[570] Contents, CREGJ 85, p2. March 2014. (PDF 241KB)     [81]

[571] VLF and Down: the Bottom End of the Radio Spectrum, CREGJ 85, pp3-4. March 2014. (PDF 97KB)     [2]

[572] Amateur Experiments at VLF, CREGJ 85, p4. March 2014. (PDF 45KB)     [1]

[573] Experimenting with VLF - Some Practical Guidance, CREGJ 85, pp5-6. March 2014. (PDF 449KB)     [2]

[574] Using Dispersion to Measure Ground Conductivity, CREGJ 85, pp7-8, 19. March 2014. (PDF 518KB)     [81]

[575] Advances in ULF Through-the-rock Technology, CREGJ 85, pp9-12. March 2014. (PDF 1.7MB)     [3]

[576] State-of-the-Art Overview of Caving Lamps - Part 2, CREGJ 85, pp13-15. March 2014. (PDF 837KB)     [1]

[577] We Hear, CREGJ 85, p16. March 2014. (PDF 642KB)     

[578] Calculating Trigonometric Functions on a Simple Microprocessor, CREGJ 85, pp17-18. March 2014. (PDF 322KB)     [1]

[579] Letter and Notes, CREGJ 85, p19. March 2014. (PDF 289KB)     [2]

[580] Web Watch, CREGJ 85, p19. March 2014. (PDF 289KB)     [2]

[581] Digital Voice in Cave Radio, CREGJ 85, p20. March 2014. (PDF 216KB)     [1]

[582] Ultrasonic Distance Measurement Investigations, CREGJ 85, pp21-24. March 2014. (PDF 1.4MB)     [1]

[583] The Adventures of GREG, CREGJ 85, p24. March 2014. (PDF 733KB)     

[584] CREG Journal 84, CREGJ 84, pp0-24. December 2013. (PDF 12.3MB)      [36]

[585] Front Cover, CREGJ 84, p1. December 2013. (PDF 2.4MB)     [1]

[586] Contents, CREGJ 84, p2. December 2013. (PDF 230KB)     [40]

[587] The Pinger - a Simple Underwater Radiolocation System, CREGJ 84, pp3-8. December 2013. (PDF 2.9MB)     [8]

[588] We Hear, CREGJ 84, p9. December 2013. (PDF 344KB)     

[589] The 'Simple' Approach to Detecting & Logging Bats, CREGJ 84, pp10-13. December 2013. (PDF 1.6MB)     [1]

[590] Personalising QR Codes, CREGJ 84, p14. December 2013. (PDF 217KB)     [1]

[591] Web Watch, CREGJ 84, p14. December 2013. (PDF 217KB)     [1]

[592] Early Radio Tests in Mammoth Cave and Carlsbad Caverns, CREGJ 84, pp15-16. December 2013. (PDF 1.5MB)     [2]

[593] State-of-the-Art Overview of Caving Lamps - Part 1, CREGJ 84, pp17-20. December 2013. (PDF 2.6MB)     [1]

[594] Letters and Notes, CREGJ 84, p21. December 2013. (PDF 206KB)     

[595] APRS Underground - a New Communications Strategy, CREGJ 84, pp22-24. December 2013. (PDF 1.8MB)     [2]

[596] The Adventures of GREG, CREGJ 84, p24. December 2013. (PDF 865KB)     

[597] CREG Journal 83, CREGJ 83, pp0-24. September 2013. (PDF 9.0MB)      [32]

[598] Front Cover, CREGJ 83, p1. September 2013. (PDF 136KB)     

[599] Contents, CREGJ 83, p2. September 2013. (PDF 78KB)     [44]

[600] Newssheet, CREGJ 83, p3. September 2013. (PDF 67KB)     [45]

[601] Wire-guided Tunnel Communications: the Broader Picture, CREGJ 83, pp4-7. September 2013. (PDF 1.1MB)     

[602] Wi-Fi Performance in Tunnels, CREGJ 83, p7. September 2013. (PDF 405KB)     

[603] Amateur VHF and UHF Radios for Caving, CREGJ 83, pp8-9. September 2013. (PDF 120KB)     [2]

[604] We Hear, CREGJ 83, p10, 14. September 2013. (PDF 454KB)     [1]

[605] Surveying Flooded Caves with Neutrally-buoyant Sensors, CREGJ 83, pp11-14. September 2013. (PDF 711KB)     [1]

[606] m-Comm Mk.2: Guidewire System for Rescue Use, CREGJ 83, pp15-18. September 2013. (PDF 1.3MB)     

[607] Web Watch, CREGJ 83, p18. September 2013. (PDF 189KB)     

[608] Wet & Dry, CREGJ 83, p19. September 2013. (PDF 206KB)     

[609] The 'Pystol' LED Handheld Water-Cooled Lamp, CREGJ 83, p20. September 2013. (PDF 503KB)     [1]

[610] Rescue Communication in Uncle Sam's Toy Coal Mine, CREGJ 83, pp21-22. September 2013. (PDF 487KB)     

[611] Letters to the Editor, CREGJ 83, pp23-24. September 2013. (PDF 441KB)     

[612] The Adventures of GREG, CREGJ 83, p24. September 2013. (PDF 858KB)     

[613] CREG Journal 82, CREGJ 82, pp0-24. June 2013. (PDF 6.8MB)      [31]

[614] Front Cover, CREGJ 82, p1. June 2013. (PDF 1.0MB)     [3]

[615] Contents, CREGJ 82, p2. June 2013. (PDF 151KB)     [58]

[616] Newssheet, CREGJ 82, p3. June 2013. (PDF 464KB)     [44]

[617] Speleo-Drone: Remote Flying Speleological Reconnaissance, CREGJ 82, pp4-6. June 2013. (PDF 919KB)     [4]

[618] Smart Pictures: Taking Underground Photos by Wi-Fi, CREGJ 82, pp7-8. June 2013. (PDF 728KB)     [1]

[619] Web Watch, CREGJ 82, p8. June 2013. (PDF 620KB)     

[620] Cave Telephones Enter the 21st Century, CREGJ 82, pp9-14. June 2013. (PDF 579KB)     [8]

[621] We Hear, CREGJ 82, p15. June 2013. (PDF 130KB)     

[622] Building LED Lights for Cave Photography - Part 3, CREGJ 82, pp16-19. June 2013. (PDF 937KB)     [3]

[623] LED lighting: how the world has got brighter [cregf], CREGJ 82.   June 2013. See further reading on the CREG forum

[624] Help Spread the Word, CREGJ 82, p19. June 2013. (PDF 241KB)     

[625] Letters to the Editor, CREGJ 82, p20. June 2013. (PDF 66KB)     [1]

[626] Underground Positioning - Taking Radio-location to the Next Level, CREGJ 82, pp21-24. June 2013. (PDF 1.8MB)     

[627] The Adventures of GREG, CREGJ 82, p24. June 2013. (PDF 1.0MB)     

[628] CREG Journal 81, CREGJ 81, pp0-24. March 2013. (PDF 7.4MB)      [34]

[629] Front Cover, CREGJ 81, p1. March 2013. (PDF 872KB)     

[630] Contents, CREGJ 81, p2. March 2013. (PDF 77KB)     [116]

[631] Newssheet, CREGJ 81, p3. March 2013. (PDF 51KB)     [39]

[632] A Low-cost Leaky Feeder System for Cave Communication, CREGJ 81, pp4-6. March 2013. (PDF 852KB)     [3]

[633] We Hear, CREGJ 81, p7. March 2013. (PDF 440KB)     

[634] Building LED Lights for Cave Photography - Part 2, CREGJ 81, pp8-10, 18. March 2013. (PDF 288KB)     [2]

[635] 3D Printing for Cavers - Introducing the Technology, CREGJ 81, pp11-13. March 2013. (PDF 414KB)     [1]

[636] Getting Physical with 3D Cave Modelling, CREGJ 81, pp14-15, 24. March 2013. (PDF 1.8MB)     [1]

[637] 3D Printing your DIY Project, CREGJ 81, pp16-18. March 2013. (PDF 844KB)     [1]

[638] Letters to the Editor, CREGJ 81, p19. March 2013. (PDF 74KB)     

[639] Web Watch, CREGJ 81, p19. March 2013. (PDF 74KB)     

[640] Surveying Nottingham's Archaeological Sandstone Caves, CREGJ 81, pp20-23. March 2013. (PDF 2.2MB)     [1]

[641] The Adventures of GREG, CREGJ 81, p24. March 2013. (PDF 1.7MB)     

[642] CREG Journal 80, CREGJ 80, pp0-24. December 2012. (PDF 7.6MB)      [33]

[643] Front Cover, CREGJ 80, p1. December 2012. (PDF 1.6MB)     

[644] Contents, CREGJ 80, p2. December 2012. (PDF 77KB)     [41]

[645] Newssheet, CREGJ 80, p3. December 2012. (PDF 53KB)     [42]

[646] We Hear, CREGJ 80, pp4-5. December 2012. (PDF 276KB)     [1]

[647] Low Frequency Amateur Radio, CREGJ 80, p6. December 2012. (PDF 49KB)     [1]

[648] Building LED Lights for Cave Photography, CREGJ 80, pp7-10. December 2012. (PDF 1.2MB)     [2]

[649] CaveSim Crawls with Electronics, CREGJ 80, pp11-12. December 2012. (PDF 683KB)     [2]

[650] An Android Digital Survey Device with no Custom Electronics, CREGJ 80, pp13-15. December 2012. (PDF 561KB)     [1]

[651] Why Won't Dowsing go Away?, CREGJ 80, pp16-19. December 2012. (PDF 1.7MB)     

[652] Dowsing and the Doctrine of Naive Analogy [cregf], CREGJ 80.   December 2012. See further reading on the CREG forum

[653] Android Underground, CREGJ 80, pp20-22. December 2012. (PDF 326KB)     

[654] Letters to the Editor, CREGJ 80, p23. December 2012. (PDF 73KB)     

[655] Web Watch, CREGJ 80, p23. December 2012. (PDF 73KB)     

[656] The Adventures of GREG, CREGJ 80, p24. December 2012. (PDF 894KB)     

[657] CREG Journal 79, CREGJ 79, pp0-24. September 2012. (PDF 5.6MB)      [30]

[658] Front Cover, CREGJ 79, p1. September 2012. (PDF 804KB)     [2]

[659] Contents, CREGJ 79, p2. September 2012. (PDF 210KB)     [106]

[660] Newssheet, CREGJ 79, p3. September 2012. (PDF 45KB)     [48]

[661] Why Won't Dowsing go Away?, CREGJ 79, pp4-8. September 2012. (PDF 428KB)     

[662] Practical Solar Power, CREGJ 79, p8. September 2012. (PDF 200KB)     

[663] Cave Technology Symposium 2012, CREGJ 79, pp9-13, 24. September 2012. (PDF 1.6MB)     [47]

[664] Cave Radio Roundup, CREGJ 79, pp14-17. September 2012. (PDF 1.0MB)     [3]

[665] We Hear, CREGJ 79, p18. September 2012. (PDF 272KB)     

[666] Letters to the Editor, CREGJ 79, p19. September 2012. (PDF 61KB)     

[667] Web Watch, CREGJ 79, p19. September 2012. (PDF 61KB)     

[668] Introduction to 3D Cave Photography, CREGJ 79, pp20-23. September 2012. (PDF 1.3MB)     

[669] The Adventures of GREG, CREGJ 79, p24. September 2012. (PDF 1.2MB)     

[670] CREG Journal 78, CREGJ 78, pp0-24. June 2012. (PDF 8.7MB)      [31]

[671] Front Cover, CREGJ 78, p1. June 2012. (PDF 604KB)     

[672] Contents, CREGJ 78, p2. June 2012. (PDF 188KB)     

[673] Newssheet, CREGJ 78, p3. June 2012. (PDF 275KB)     [1]

[674] We Hear, CREGJ 78, p4. June 2012. (PDF 725KB)     [1]

[675] A Call Button for the Lovell Earth Return Telephone, CREGJ 78, p5. June 2012. (PDF 428KB)     [3]

[676] Why Earth Resistivity Surveying Doesn't Work, CREGJ 78, pp6-9. June 2012. (PDF 644KB)     [4]

[677] Cave Radio Trials at Higher Frequencies, CREGJ 78, pp10-12. June 2012. (PDF 2.5MB)     [1]

[678] Letters to the Editor, CREGJ 78, p13, 24. June 2012. (PDF 410KB)     [1]

[679] A Water-Cooled LED Light, CREGJ 78, pp14-18. June 2012. (PDF 1.7MB)     [1]

[680] Protection Circuit for a LiFePO4 Battery Pack, CREGJ 78, pp19-21. June 2012. (PDF 1.2MB)     

[681] Web Watch, CREGJ 78, p21. June 2012. (PDF 501KB)     

[682] Signal-to-Noise Ratio and its Assessment, CREGJ 78, pp22-23. June 2012. (PDF 1.7MB)     

[683] The Adventures of GREG, CREGJ 78, p24. June 2012. (PDF 604KB)     

[684] CREG Journal 77, CREGJ 77, pp0-20. March 2012. (PDF 5.2MB)      [46]

[685] Newssheet, CREGJ 77, p3. March 2012. (PDF 5.2MB)      [46]

[686] We Hear, CREGJ 77, p4. March 2012. (PDF 5.2MB)      [46]

[687] Journey to the Centre of the Planet - My Small Part, CREGJ 77, pp5-7. March 2012. (PDF 5.2MB)      [46]

[688] Web Watch, CREGJ 77, p7. March 2012. (PDF 5.2MB)      [46]

[689] Methods of Measuring Ground Resistivity, CREGJ 77, pp8-9. March 2012. (PDF 5.2MB)      [46]

[690] XKCD Circuit Diagram, CREGJ 77, p9. March 2012. (PDF 5.2MB)      [46]

[691] Loop Antennas v. Ferrite Rods: A Case Study, CREGJ 77, pp10-14. March 2012. (PDF 401KB)     [58]

[692] Wet & Dry, CREGJ 77, p15. March 2012. (PDF 5.2MB)      [46]

[693] Cave Detection by Earth Resistivity Surveying, CREGJ 77, pp16-20. March 2012. (PDF 5.2MB)      [46]

[694] The Adventures of GREG, CREGJ 77, p20. March 2012. (PDF 5.2MB)      [46]

[695] CREG Journal 76, CREGJ 76, pp0-28. December 2011. (PDF 10.9MB)      [55]

[696] Newssheet, CREGJ 76, p3. December 2011. (PDF 10.9MB)      [55]

[697] We Hear, CREGJ 76, pp4-5. December 2011. (PDF 10.9MB)      [55]

[698] The Simplest Radiolocator, CREGJ 76, pp6-10. December 2011. (PDF 10.9MB)      [55]

[699] Cave Photography Using White LEDs, CREGJ 76, pp11-12. December 2011. (PDF 10.9MB)      [55]

[700] ResCam and MineCam Updates, CREGJ 76, pp13-14. December 2011. (PDF 10.9MB)      [55]

[701] Cave Technology Symposium 2011, CREGJ 76, pp14-15. December 2011. (PDF 10.9MB)      [55]

[702] Two LED Video Luminaires, CREGJ 76, pp16-18. December 2011. (PDF 10.9MB)      [55]

[703] How to See Through Murky Water, CREGJ 76, pp19-23. December 2011. (PDF 10.9MB)      [55]

[704] Web Watch, CREGJ 76, p24. December 2011. (PDF 10.9MB)      [55]

[705] The Adventures of GREG, CREGJ 76, p24. December 2011. (PDF 10.9MB)      [55]

[706] CREG Journal 75, CREGJ 75, pp0-28. December 2010. (PDF 13.0MB)      [42]

[707] Newssheet, CREGJ 75, p3. December 2010. (PDF 13.0MB)      [42]

[708] A logging Anemometer, CREGJ 75, pp4-5. December 2010. (PDF 13.0MB)      [42]

[709] 75 Highlights from 75 Issues, CREGJ 75, pp6-10. December 2010. (PDF 13.0MB)      [42]

[710] Electromagnetic Surveying for Underground Water Detection, CREGJ 75, pp11-13. December 2010. (PDF 13.0MB)      [42]

[711] LORAN-C: Friend or Foe?, CREGJ 75, pp14-17. December 2010. (PDF 13.0MB)      [42]

[712] VLF for Cave Radio?, CREGJ 75, pp18-19. December 2010. (PDF 13.0MB)      [42]

[713] We Hear, CREGJ 75, pp20-21. December 2010. (PDF 13.0MB)      [42]

[714] Web Watch, CREGJ 75, p21. December 2010. (PDF 13.0MB)      [42]

[715] Correction, CREGJ 75, p22. December 2010. (PDF 13.0MB)      [42]

[716] Letters to the Editor, CREGJ 75, p23. December 2010. (PDF 13.0MB)      [42]

[717] Developing a Dynamic Rope Tester - Work in Progress, CREGJ 75, pp24-27. December 2010. (PDF 13.0MB)      [42]

[718] The Adventures of GREG, CREGJ 75, p28. December 2010. (PDF 13.0MB)      [42]

[719] CREG Journal 74, CREGJ 74, pp0-28. September 2010. (PDF 11.3MB)      [38]

[720] Newssheet, CREGJ 74, p3. September 2010. (PDF 11.3MB)      [38]

[721] Cave Technology Symposium 2010, CREGJ 74, pp4-8. September 2010. (PDF 11.3MB)      [38]

[722] QR Codes - the Latest, CREGJ 74, p9. September 2010. (PDF 11.3MB)      [38]

[723] Sub-Surface Radio in South African Gold Mines, CREGJ 74, pp10-13. September 2010. (PDF 11.3MB)      [38]

[724] Lighting for Underground Video, CREGJ 74, pp14-16. September 2010. (PDF 11.3MB)      [38]

[725] Introducing the Light Shaping Diffuser, CREGJ 74, p17. September 2010. (PDF 11.3MB)      [38]

[726] Loran-C Suppression in Digital Cave Radios, CREGJ 74, pp18-22. September 2010. (PDF 11.3MB)      [38]

[727] We Hear, CREGJ 74, pp23-24. September 2010. (PDF 11.3MB)      [38]

[728] Web Watch, CREGJ 74, p24. September 2010. (PDF 11.3MB)      [38]

[729] HDR Cave Photography, CREGJ 74, pp25-28. September 2010. (PDF 11.3MB)      [38]

[730] The Adventures of GREG, CREGJ 74, p27. September 2010. (PDF 11.3MB)      [38]

[731] CREG Journal 73, CREGJ 73, pp0-24. March 2010. (PDF 5.0MB)      [41]

[732] Newssheet, CREGJ 73, p3. March 2010. (PDF 5.0MB)      [41]

[733] Video Camera for Probing Leads, CREGJ 73, p4. March 2010. (PDF 5.0MB)      [41]

[734] Wet & Dry, CREGJ 73, p5. March 2010. (PDF 5.0MB)      [41]

[735] Seam Wave Propagation and its Possible Application to Cave Radio, CREGJ 73, pp6-9. March 2010. (PDF 5.0MB)      [41]

[736] We Hear, CREGJ 73, pp10-11. March 2010. (PDF 5.0MB)      [41]

[737] A General Calibration Algorithm for 3-Axis Compass/Clinometer Devices, CREGJ 73, pp12-18. March 2010. (PDF 5.0MB)      [41]

[738] Cave Technology Symposium 2009, CREGJ 73, pp19-23. March 2010. (PDF 5.0MB)      [41]

[739] Web Watch, CREGJ 73, p24. March 2010. (PDF 5.0MB)      [41]

[740] The Adventures of GREG, CREGJ 73, p24. March 2010. (PDF 5.0MB)      [41]

[741] CREG Journal 72, CREGJ 72, pp0-24. September 2009. (PDF 5.5MB)      [45]

[742] Newssheet, CREGJ 72, p3. September 2009. (PDF 5.5MB)      [45]

[743] A Prototype Cave Radio to Avoid Loran Interference, CREGJ 72, pp4-6. September 2009. (PDF 5.5MB)      [45]

[744] Unexpected Propagation in Falkenstein Cave, Germany, CREGJ 72, p7. September 2009. (PDF 5.5MB)      [45]

[745] An All-In-One Electronic Cave Surveying Device, CREGJ 72, pp8-10. September 2009. (PDF 5.5MB)      [45]

[746] Letters to the Editor, CREGJ 72, p11. September 2009. (PDF 5.5MB)      [45]

[747] Assessing Speech Intelligibility over a Communication Channel, CREGJ 72, pp12-15. September 2009. (PDF 5.5MB)      [45]

[748] Web Watch, CREGJ 72, p15. September 2009. (PDF 5.5MB)      [45]

[749] Use of Audio DSP Noise Filters to Reduce the Effect of Loran Interference, CREGJ 72, pp16-18. September 2009. (PDF 5.5MB)      [45]

[750] We Hear, CREGJ 72, pp19-20. September 2009. (PDF 5.5MB)      [45]

[751] Introducing the Equivital Physiological Monitor, CREGJ 72, pp21-23. September 2009. (PDF 5.5MB)      [45]

[752] Recording Fluorescence with a Digital Camera, CREGJ 72, pp23-24. September 2009. (PDF 5.5MB)      [45]

[753] The Adventures of GREG, CREGJ 72, p24. September 2009. (PDF 5.5MB)      [45]

[754] CREG Journal 71, CREGJ 71, pp0-24. June 2008. (PDF 4.7MB)      [35]

[755] Newssheet, CREGJ 71, p3. June 2008. (PDF 4.7MB)      [35]

[756] IP Ratings Revisited, CREGJ 71, pp4-6. June 2008. (PDF 4.7MB)      [35]

[757] Wet & Dry, CREGJ 71, p7. June 2008. (PDF 4.7MB)      [35]

[758] A Caving Light for the 21st Century, CREGJ 71, pp8-12. June 2008. (PDF 4.7MB)      [35]

[759] Web Watch, CREGJ 71, p12. June 2008. (PDF 4.7MB)      [35]

[760] We Hear, CREGJ 71, p13. June 2008. (PDF 4.7MB)      [35]

[761] Novel Cave Radio Antenna uses Small Ceramic Tiles, CREGJ 71, pp14-15. June 2008. (PDF 1.2MB)     [103]

[762] Wireless in a Coalmine, CREGJ 71, pp16-17. June 2008. (PDF 4.7MB)      [35]

[763] Speleonics, CREGJ 71, p18. June 2008. (PDF 4.7MB)      [35]

[764] Letters to the Editor, CREGJ 71, p19. June 2008. (PDF 4.7MB)      [35]

[765] Cave Technology Symposium 2008, CREGJ 71, pp20-23. June 2008. (PDF 4.7MB)      [35]

[766] Unusual Photographic Duotone Processing, CREGJ 71, p24. June 2008. (PDF 4.7MB)      [35]

[767] The Adventures of GREG, CREGJ 71, p24. June 2008. (PDF 4.7MB)      [35]

[768] CREG Journal 70, CREGJ 70, pp0-20. March 2008. (PDF 12.7MB)      [42]

[769] Newssheet, CREGJ 70, p3. March 2008. (PDF 12.7MB)      [42]

[770] Tests on the Reception Pattern of Earth Current Antennas, CREGJ 70, pp4-8. March 2008. (PDF 12.7MB)      [42]

[771] 500kHz and Cave Radio, CREGJ 70, p9. March 2008. (PDF 12.7MB)      [42]

[772] Acoustic Drip Counters for Environmental Monitoring, CREGJ 70, pp10-13. March 2008. (PDF 12.7MB)      [42]

[773] We Hear, CREGJ 70, pp14-15. March 2008. (PDF 12.7MB)      [42]

[774] Wet and Dry, CREGJ 70, p16. March 2008. (PDF 12.7MB)      [42]

[775] Letters to the Editor, CREGJ 70, p17. March 2008. (PDF 12.7MB)      [42]

[776] Web Watch, CREGJ 70, p17. March 2008. (PDF 12.7MB)      [42]

[777] Batteries for the 21st Century, CREGJ 70, pp18-19. March 2008. (PDF 12.7MB)      [42]

[778] The Adventures of GREG, CREGJ 70, p20. March 2008. (PDF 12.7MB)      [42]

[779] CREG Journal 69, CREGJ 69, pp0-24. December 2007. (PDF 5.4MB)      [41]

[780] Newssheet, CREGJ 69, p3. December 2007. (PDF 5.4MB)      [41]

[781] The Wonder and Madness of WEEE and RoHS, CREGJ 69, pp4-6. December 2007. (PDF 5.4MB)      [41]

[782] Web Watch, CREGJ 69, p6. December 2007. (PDF 5.4MB)      [41]

[783] The Adventure Starts Here, CREGJ 69, p7, 12. December 2007. (PDF 5.4MB)      [41]

[784] KSE Lights - Oldham Lamps for the 21st Century?, CREGJ 69, pp8-9. December 2007. (PDF 5.4MB)      [41]

[785] Calibrating the Electronic Compass/Clinometer, CREGJ 69, pp10-12. December 2007. (PDF 5.4MB)      [41]

[786] CREG Award 2007, CREGJ 69, p13. December 2007. (PDF 5.4MB)      [41]

[787] We Hear, CREGJ 69, pp14-15. December 2007. (PDF 5.4MB)      [41]

[788] Wet and Dry, CREGJ 69, p15. December 2007. (PDF 5.4MB)      [41]

[789] An Electronic Inclinometer, CREGJ 69, pp16-19. December 2007. (PDF 5.4MB)      [41]

[790] Speleonics, CREGJ 69, p20. December 2007. (PDF 5.4MB)      [41]

[791] 2007 Cave Technology Symposium, CREGJ 69, pp21-23. December 2007. (PDF 5.4MB)      [41]

[792] The Adventures of GREG, CREGJ 69, p24. December 2007. (PDF 5.4MB)      [41]

[793] CREG Journal 68, CREGJ 68, pp0-8. September 2007. (PDF 2.6MB)      [34]

[794] Front Cover, CREGJ 68, p1. September 2007. (PDF 605KB)     

[795] Masthead, CREGJ 68, p2. September 2007. (PDF 210KB)     [37]

[796] Newssheet, CREGJ 68, p3. September 2007. (PDF 187KB)     [41]

[797] Annual General Meeting 2007, CREGJ 68, pp4-5. September 2007. (PDF 228KB)     

[798] Treasurer's Report to AGM 2007, CREGJ 68, pp6-7. September 2007. (PDF 265KB)     

[799] Cave Technology Symposium 2008, CREGJ 68, p8. September 2007. (PDF 148KB)     [45]

[800] CREG Journal 67, CREGJ 67, pp0-24. June 2007. (PDF 5.1MB)      [49]

[801] Front Cover, CREGJ 67, p1. June 2007. (PDF 5.1MB)      [49]

[802] Masthead, CREGJ 67, p2. June 2007. (PDF 5.1MB)      [49]

[803] Newssheet, CREGJ 67, p3. June 2007. (PDF 5.1MB)      [49]

[804] TEDRA, the Development of a Software Defined Cave Radio, CREGJ 67, pp4-6. June 2007. (PDF 5.1MB)      [49]

[805] Web Watch, CREGJ 67, p6. June 2007. (PDF 5.1MB)      [49]

[806] eLoran - What Is It?, CREGJ 67, p7. June 2007. (PDF 5.1MB)      [49]

[807] Thermal Imaging Cave Detection, CREGJ 67, pp8-12. June 2007. (PDF 5.1MB)      [49]

[808] Resurgence Data Logging, CREGJ 67, pp13-16. June 2007. (PDF 5.1MB)      [49]

[809] Speleonics, CREGJ 67, p17. June 2007. (PDF 5.1MB)      [49]

[810] We Hear, CREGJ 67, p18. June 2007. (PDF 5.1MB)      [49]

[811] Letters to the Editor, CREGJ 67, p19. June 2007. (PDF 5.1MB)      [49]

[812] Introducing The Internet of Things, CREGJ 67, pp20-23. June 2007. (PDF 5.1MB)      [49]

[813] Unusual Photographic Duotone Processing, CREGJ 67, pp23-24. June 2007. (PDF 5.1MB)      [49]

[814] The Adventures of GREG, CREGJ 67, p23. June 2007. (PDF 5.1MB)      [49]

[815] CREG Journal 66, CREGJ 66, pp0-28. March 2007. (PDF 6.5MB)      [44]

[816] Newssheet, CREGJ 66, p3. March 2007. (PDF 6.5MB)      [44]

[817] The Scurion LED Cap Lamp, CREGJ 66, pp4-5. March 2007. (PDF 6.5MB)      [44]

[818] Alternative Power Supplies, CREGJ 66, pp6-11. March 2007. (PDF 6.5MB)      [44]

[819] NightStar - a Review, CREGJ 66, p11. March 2007. (PDF 6.5MB)      [44]

[820] A Combined Electronic Compass and Clinometer, CREGJ 66, pp12-14. March 2007. (PDF 6.5MB)      [44]

[821] Speleonics, CREGJ 66, p15. March 2007. (PDF 6.5MB)      [44]

[822] The Technology of Infrared Imaging, CREGJ 66, pp16-20. March 2007. (PDF 6.5MB)      [44]

[823] We Hear, CREGJ 66, pp21-22. March 2007. (PDF 6.5MB)      [44]

[824] Web Watch, CREGJ 66, p22. March 2007. (PDF 6.5MB)      [44]

[825] NightStar Special Reader Offer, CREGJ 66, p22. March 2007. (PDF 6.5MB)      [44]

[826] White LED Lamps Compared, CREGJ 66, pp23-25. March 2007. (PDF 6.5MB)      [44]

[827] Letters to the Editor, CREGJ 66, pp25-27. March 2007. (PDF 6.5MB)      [44]

[828] The Adventures of GREG, CREGJ 66, p28. March 2007. (PDF 6.5MB)      [44]

[829] CREG Journal 65, CREGJ 65, pp0-24. December 2006. (PDF 12.0MB)      [41]

[830] Newssheet, CREGJ 65, p3. December 2006. (PDF 12.0MB)      [41]

[831] BCRA Cave Technology Symposium, CREGJ 65, p4. December 2006. (PDF 12.0MB)      [41]

[832] We Hear, CREGJ 65, p5. December 2006. (PDF 12.0MB)      [41]

[833] A Digital Class-D Single-Sideband Transmitter, CREGJ 65, pp6-8. December 2006. (PDF 526KB)     [123]

[834] CREG Award 2006, CREGJ 65, p9. December 2006. (PDF 12.0MB)      [41]

[835] Designing an Efficient LED Caving Lamp, CREGJ 65, pp10-12. December 2006. (PDF 12.0MB)      [41]

[836] Field Exposure Limit for a Body-Worn Cave Radio Loop, CREGJ 65, p13. December 2006. (PDF 12.0MB)      [41]

[837] Communications in Show Caves - Appraising the Options, CREGJ 65, pp14-17. December 2006. (PDF 12.0MB)      [41]

[838] Web Watch, CREGJ 65, p17. December 2006. (PDF 12.0MB)      [41]

[839] Speleonics, CREGJ 65, p18. December 2006. (PDF 12.0MB)      [41]

[840] How to Report Experiments, CREGJ 65, p19. December 2006. (PDF 12.0MB)      [41]

[841] Letters to the Editor, CREGJ 65, p20. December 2006. (PDF 12.0MB)      [41]

[842] Treasurer's Report for 2005/6, CREGJ 65, p21. December 2006. (PDF 12.0MB)      [41]

[843] Reassessing the HeyPhone Output Transformer Ratio, CREGJ 65, pp22-23. December 2006. (PDF 12.0MB)      [41]

[844] The Adventures of GREG, CREGJ 65, p23. December 2006. (PDF 12.0MB)      [41]

[845] Cave Surveys in Colour, rear cover illustration, CREGJ 65, p24. December 2006. (PDF 12.0MB)      [41]

[846] CREG Journal 64, CREGJ 64, pp0-24. September 2006. (PDF 6.9MB)      [44]

[847] Newssheet, CREGJ 64, p3. September 2006. (PDF 6.9MB)      [44]

[848] Improved Automatic Gain Control for the HeyPhone, CREGJ 64, p4. September 2006. (PDF 6.9MB)      [44]

[849] Reviewing the RETRO 2, CREGJ 64, pp5-6. September 2006. (PDF 6.9MB)      [44]

[850] We Hear, CREGJ 64, pp7-8. September 2006. (PDF 6.9MB)      [44]

[851] A Robotic Surveying Vehicle for Hazardous Conditions, CREGJ 64, pp9-11. September 2006. (PDF 6.9MB)      [44]

[852] Web Watch, CREGJ 64, p11. September 2006. (PDF 6.9MB)      [44]

[853] HeyPhones and Système Nicola in Cueva del Gato, Málaga, CREGJ 64, p12. September 2006. (PDF 6.9MB)      [44]

[854] Remote Data Logging with Cell-Phones and the Internet, CREGJ 64, pp13-14. September 2006. (PDF 699KB)     [74]

[855] 230V AC Supply in the Field, CREGJ 64, p15. September 2006. (PDF 6.9MB)      [44]

[856] PMR 446 Eight Years On: Update on Licence-free Radio, CREGJ 64, pp16-18. September 2006. (PDF 6.9MB)      [44]

[857] CREG at the BPC Winch Meet, CREGJ 64, pp19-20. September 2006. (PDF 6.9MB)      [44]

[858] Speleonics, CREGJ 64, pp21-22. September 2006. (PDF 6.9MB)      [44]

[859] Letters to the Editor, CREGJ 64, pp23-24. September 2006. (PDF 6.9MB)      [44]

[860] CREG Journal 63, CREGJ 63, pp0-24. June 2006. (PDF 3.7MB)      [38]

[861] Newssheet, CREGJ 63, p3. June 2006. (PDF 3.7MB)      [38]

[862] An Introduction to Low Data-Rate Speech Codecs, CREGJ 63, pp4-5. June 2006. (PDF 3.7MB)      [38]

[863] Improving Cell-Phone Signal Strength in Marginal Areas, CREGJ 63, pp6-7. June 2006. (PDF 3.7MB)      [38]

[864] Cave Radio Notebook, CREGJ 63, pp8-10. June 2006. (PDF 3.7MB)      [38]

[865] Communications Tests in the Severn Railway Tunnel, CREGJ 63, p11. June 2006. (PDF 3.7MB)      [38]

[866] We Hear, CREGJ 63, pp12-13. June 2006. (PDF 3.7MB)      [38]

[867] A Ready-Made Power Amplifier for Cave Radio, CREGJ 63, pp14-15. June 2006. (PDF 3.7MB)      [38]

[868] Through-Rock Radio: A Professional Perspective, CREGJ 63, pp16-17. June 2006. (PDF 3.7MB)      [38]

[869] Introducing Nathan B. Stubblefield - Induction and Earth Current Pioneer, CREGJ 63, pp18-19. June 2006. (PDF 3.7MB)      [38]

[870] Web Watch, CREGJ 63, p19. June 2006. (PDF 3.7MB)      [38]

[871] Speleonics, CREGJ 63, p20. June 2006. (PDF 3.7MB)      [38]

[872] Robust Text and Data Exchange with Earth-Current Transceivers, CREGJ 63, pp21-22. June 2006. (PDF 3.7MB)      [38]

[873] Review, CREGJ 63, p23. June 2006. (PDF 3.7MB)      [38]

[874] Letters to the Editor, CREGJ 63, pp23-24. June 2006. (PDF 3.7MB)      [38]

[875] CREG Journal 62, CREGJ 62, pp0-28. December 2005. (PDF 4.7MB)      [44]

[876] Newssheet, CREGJ 62, p3. December 2005. (PDF 4.7MB)      [44]

[877] Development of an FPGA-Based Cave Radio, CREGJ 62, pp4-5. December 2005. (PDF 4.7MB)      [44]

[878] CREG 2004-2005 in Review, CREGJ 62, pp6-7. December 2005. (PDF 4.7MB)      [44]

[879] Speleonics, CREGJ 62, p8. December 2005. (PDF 4.7MB)      [44]

[880] An Introduction to ZigBee, CREGJ 62, p9. December 2005. (PDF 4.7MB)      [44]

[881] Whither Loran?, CREGJ 62, p10. December 2005. (PDF 4.7MB)      [44]

[882] Field Meeting Report: Autumn 2005, CREGJ 62, p11. December 2005. (PDF 4.7MB)      [44]

[883] Low-Power Wireless Mesh Networks in Underground Mining, CREGJ 62, pp12-17. December 2005. (PDF 4.7MB)      [44]

[884] HeyPhone Tests in the Sierra de las Nieves, CREGJ 62, p18. December 2005. (PDF 4.7MB)      [44]

[885] Web Watch, CREGJ 62, p18. December 2005. (PDF 4.7MB)      [44]

[886] Assessing Noise-Cancelling Headphones Underground, CREGJ 62, pp19-20. December 2005. (PDF 4.7MB)      [44]

[887] Wet and Dry, CREGJ 62, p21. December 2005. (PDF 4.7MB)      [44]

[888] Directional Microphones for Acoustic Noise Reduction, CREGJ 62, pp22-23. December 2005. (PDF 4.7MB)      [44]

[889] Cave Radio Notebook, CREGJ 62, p24. December 2005. (PDF 4.7MB)      [44]

[890] We Hear, CREGJ 62, p25. December 2005. (PDF 4.7MB)      [44]

[891] Letters to the Editor, CREGJ 62, pp26-28. December 2005. (PDF 4.7MB)      [44]

[892] CREG Journal 61, CREGJ 61, p?. September 2005. (PDF 3.6MB)      [42]

[893] Newssheet, CREGJ 61, p3. September 2005. (PDF 3.6MB)      [42]

[894] Loran in Northwest Europe, CREGJ 61, p4. September 2005. (PDF 3.6MB)      [42]

[895] Combating Acoustic Noise, CREGJ 61, p5. September 2005. (PDF 3.6MB)      [42]

[896] Parallel Resonant Loop Antennas for Cave Radios, CREGJ 61, pp6-7. September 2005. (PDF 3.6MB)      [42]

[897] Parallel v. Series Resonant Loops, CREGJ 61, p7. September 2005. (PDF 333KB)     [46]

[898] Reducing Acoustic Noise Using Directional Microphones, CREGJ 61, pp8-11. September 2005. (PDF 3.6MB)      [42]

[899] Noise Cancelling Microphones, CREGJ 61, p11. September 2005. (PDF 3.6MB)      [42]

[900] Loran Behind the Scenes, CREGJ 61, p12. September 2005. (PDF 3.6MB)      [42]

[901] MatLab Synthesis of Loran Interference, CREGJ 61, pp13-15. September 2005. (PDF 3.6MB)      [42]

[902] Update: A Flashgun Isolator, CREGJ 61, p16. September 2005. (PDF 3.6MB)      [42]

[903] CREG Award 2005, CREGJ 61, p17. September 2005. (PDF 3.6MB)      [42]

[904] Wet and Dry, CREGJ 61, p18. September 2005. (PDF 3.6MB)      [42]

[905] Early Cave Radio in Castleton?, CREGJ 61, p19. September 2005. (PDF 3.6MB)      [42]

[906] Radio Tests at Warren Hill Railway Tunnel, Newmarket, CREGJ 61, p20. September 2005. (PDF 3.6MB)      [42]

[907] We Hear, CREGJ 61, pp21-22. September 2005. (PDF 3.6MB)      [42]

[908] Web Watch, CREGJ 61, p22. September 2005. (PDF 3.6MB)      [42]

[909] Letters to the Editor, CREGJ 61, pp23-24. September 2005. (PDF 3.6MB)      [42]